Sec 2 G1 Maths Tutor Bukit Timah

Did you know? A perfectly straight line can still be mathematically wrong. If it was meant to bisect an angle, it must divide that angle into two equal openings. If it was meant to bisect a line segment perpendicularly, it must meet the segment at exactly its midpoint and at 90 degrees. In Secondary 2 G1 Mathematics, compass and ruler constructions train something bigger than neat drawing: they teach how to support an answer with geometric evidence.

Quick answer: which construction do you need?

A perpendicular bisector cuts a line segment into two equal lengths at 90 degrees. An angle bisector is a ray from an angle’s vertex dividing the angle into two equal angles. With a compass and straightedge, both can be made from equal-radius arcs. The accurate construction depends on preserving the radius, not on eyeballing where the halfway point should appear.

This guide is written for parents and pupils seeking a Secondary 2 G1 Mathematics tutor in Bukit Timah. MOE’s G1 content-by-level document lists perpendicular bisectors, angle bisectors and constructing simple figures under Secondary Two. The 2027 G1 SEC K110 syllabus retains these topics. School-specific assessment schedules vary, and this is an instructional guide rather than a reproduction of official past papers.

A 60-second diagnostic for geometry tools

Give the child a 6-cm segment AB and ask for its midpoint. The response should be at 3 cm from either end. Next ask them to draw a line through that point at 90 degrees to AB. If they draw a line through the middle without checking 90 degrees, they know what ‘bisect’ means but not the additional perpendicular condition. Then show a 60-degree angle and ask them to mark the two 30-degree parts and construct the bisector from the vertex. These are three observable skills, not one general drawing talent.

Ask the learner to explain how they would prove the line was correct. For a perpendicular bisector, the proof check is two equal half-lengths plus a 90-degree crossing. For an angle bisector, it is equal angle measures plus a common vertex. The marks made by the compass help support that explanation even before a ruler or protractor is used to audit the result.

What a compass really contributes

Equal arcs carry information that looks invisible

A compass preserves a chosen distance. Draw arcs from two endpoints A and B using the same radius. Any intersection P is equally distant from A and B because PA and PB are both that radius. Two such intersections above and below the segment determine a line of points that are equally distant from the endpoints: the perpendicular bisector. The result is based on equality of distances, not the artist’s ability to draw perfectly upright strokes.

An angle bisector is not a line through a midpoint

An angle has a vertex and two rays. Start by choosing the same radius from the vertex to mark one point on each ray. Next use the marked points as arc centres with equal radii. The point where those arcs meet inside the angle sits in the equal-distance relationship that identifies its bisector. Join the vertex to that intersection. A line segment across the arms without passing through the vertex is not the angle bisector.

A protractor and a compass answer different questions

A protractor measures an opening to a displayed degree value. A compass transfers a distance and allows an exact geometric construction in the ideal plane. A ruler draws the straight line joining constructed points, while a set square helps establish right angles. Combining tools wisely is different from choosing one favourite instrument for every question. For assessment work, follow the exact method the teacher requests; an approximate 30-degree line is not automatically the same as an arc-based bisection.

Two core methods to remember

method-perp

Step one: draw and label segment AB. Step two: open the compass to more than half AB’s length. Step three: from A, draw arcs above and below the segment. Step four: without changing the opening, repeat from B so the arcs cross at two distinct points P and Q. Step five: join P and Q with a ruler. Their line cuts AB halfway and at 90 degrees. Retain enough construction arcs for the method to be checked.

method-angle

Place the compass at vertex O and draw an arc that cuts the two arms at X and Y. Set any useful compass width; draw equal-radius arcs from X and Y that intersect inside the angle at P. Join O to P. Ray OP is the internal angle bisector. To check, measure both new angles or appeal to the equal distances established by the arc construction. Avoid altering the compass opening between the arcs from X and Y.

misconceptions

The small marks left by a compass are not distracting pencil leftovers. They encode the constraints that made the answer possible. A line through a midpoint is not necessarily perpendicular; two angles summing to 90 degrees are not automatically equal; and an isosceles triangle is not necessarily equilateral. Ask the learner to name the exact invariant—equal distances, equal angles or a right angle—before calling a drawing complete.

Original Secondary 2 G1 construction learning clinics

Use a real compass, ruler and protractor if available. These 44 practice situations move from midpoint identification to arc constructions, simple figures and conceptual checking. They can be attempted in small batches. Each includes a reasoning check; do not simply trace the finished figure without reconstructing the evidence.

1. Find the midpoint of a 6-cm segment

Try it. Draw AB=6 cm. Where is the midpoint M?

What to draw and why. Half of six is three, so AM=MB=3 cm. Mark M at the 3-cm position along the segment.

Where the first mistake begins. Reading the ruler from its physical plastic edge instead of the zero mark.

Check the construction. The property is exact: a perpendicular bisector meets the segment at 90 degrees and halfway along it. Any point on that bisector is equally distant from both endpoints. Explain the geometric property, not just the appearance of a neat pencil line.

Apply the idea again. Cover the directions and repeat this case using a differently oriented baseline or vertex. Before drawing, say which fact is given, which length or angle must stay unchanged, and what physical mark would prove the result. Then compare the final measurements with the specified information. Accuracy improves when the learner checks the geometric condition rather than copying a picture.

2. Find a perpendicular bisector with a compass

Try it. Construct a perpendicular bisector of a segment AB.

What to draw and why. From A and B draw equal-radius arcs of radius more than half AB, above and below the segment. Join their two intersections; the joining line is the perpendicular bisector.

Where the first mistake begins. Changing the compass opening between the arcs from A and B invalidates the symmetric intersections.

Check the construction. A compass is a distance-copying instrument; the ruler is for straight edges and measurements. Keep arc radii consistent with the step you are performing and label the original points. Construction marks are evidence of how a result was obtained and should generally remain visible.

3. Choose a useful compass radius

Try it. AB is 8 cm. Is an arc radius of 3 cm adequate for two intersections above and below?

What to draw and why. No. Each arc radius must exceed half of AB, which is four centimetres. Use, for example, five centimetres.

Where the first mistake begins. A radius shorter than half the segment creates no arc intersections and the student mistakes the missing marks for a drawing problem.

4. Explain why equal arcs create a midpoint line

Try it. A pair of arc intersections P and Q are drawn from A and B using equal radii. Why is PQ a perpendicular bisector?

What to draw and why. P and Q are each equally distant from A and B. The line through such points is the perpendicular bisector of AB.

Where the first mistake begins. Treating the arc intersections as arbitrary decorative marks without a distance property.

5. An equidistant point lies on a perpendicular bisector

Try it. Given PA=PB, where can point P lie relative to segment AB?

What to draw and why. Any point P in the plane equidistant from A and B lies on the perpendicular bisector of AB.

Where the first mistake begins. Assuming that P must be the midpoint of AB. P can be above or below the segment on the same bisector line.

6. Midpoint alone is not enough for a perpendicular line

Try it. M is the midpoint of AB. Does every line through M bisect AB perpendicularly?

What to draw and why. No. Every line through M crosses the midpoint, but only the line making a 90-degree angle with AB is a perpendicular bisector.

Where the first mistake begins. Confusing ‘passes through the middle’ with ‘also forms a right angle’.

7. Construct a 90-degree line through a midpoint

Try it. How can a pupil construct a perpendicular line through the midpoint of segment AB?

What to draw and why. Use equal-radius intersecting arcs from A and B, join the intersections, and confirm the line crosses AB at its midpoint at 90 degrees.

Where the first mistake begins. Drawing a visually upright line with a ruler without establishing perpendicularity.

8. Test an allegedly equal-distance point

Try it. AB=10 cm, and point P is labelled 6 cm from A and 6 cm from B. Is this consistent with P on the perpendicular bisector?

What to draw and why. Yes, the equal distances are consistent with the locus property, assuming the triangle is geometrically possible. P need not lie on AB.

Where the first mistake begins. Demanding that all equal-distance points sit exactly halfway along the original segment.

Check the construction. Verifying the construction is a separate skill. Check the measured length or angle and the defining geometric property. A protractor check is a useful approximate audit of an exact geometric construction, not a replacement for its necessary arc-based reasoning.

9. Mark two segments with the same length

Try it. A segment CD should match AB=5 cm. How can a compass transfer the distance?

What to draw and why. Set the compass opening to AB and mark a new point at that distance from C along the chosen ray. The marked endpoint D gives CD=AB.

Where the first mistake begins. Measuring five centimetres from a different ruler scale or altering the compass opening unintentionally.

10. Bisect a 60-degree angle

Try it. An angle measures 60 degrees. What should each part measure after bisection?

What to draw and why. Each angle is 30 degrees. Draw the bisector ray from the original vertex, using a consistent arc construction or a measuring check.

Where the first mistake begins. Drawing the new ray from a point on an arm rather than from the common vertex.

Check the construction. An angle bisector divides an angle into two equal angles. The new ray shares the original vertex, and points on the ray are equally distant from the two bounding rays when those distances are measured perpendicularly. The quality check is equality, not simply that the drawing looks central.

11. Bisect a 90-degree angle

Try it. What is the result of bisecting a right angle?

What to draw and why. Each of the two angles is 45 degrees. Bisecting a constructed perpendicular creates an exact 45-degree direction.

Where the first mistake begins. Guessing the middle by eye without equal-arc evidence.

12. Bisect a 120-degree angle

Try it. A 120-degree angle is bisected. Give the two measures.

What to draw and why. Each part is 60 degrees because 120 divided by two is 60.

Where the first mistake begins. Interpreting bisect as reducing the angle by two degrees rather than dividing into halves.

13. Bisect an 86-degree angle

Try it. A pupil measures an angle as 86 degrees and wants equal parts.

What to draw and why. Each half is 43 degrees. The constructed ray should create two equal 43-degree angles, subject to measurement accuracy if using a protractor.

Where the first mistake begins. Subtracting 43 from only one arm and treating the ray as displaced from the vertex.

14. Construct an angle bisector by arcs

Try it. How can angle AOB be bisected with compass and ruler?

What to draw and why. Centre the compass at O and mark equal-distance points X and Y on the two arms. From X and Y draw equal-radius arcs meeting inside the angle at P. Draw OP.

Where the first mistake begins. Using different radii from X and Y produces an arbitrary intersection instead of the intended bisector.

15. Use a property of an angle bisector

Try it. P lies on the internal bisector of angle AOB. What is true about its distances to the two sides?

What to draw and why. The perpendicular distances from P to each arm line are equal. This is a locus property of the angle bisector.

Where the first mistake begins. Measuring from P diagonally to different chosen points on the rays is not the correct perpendicular-distance comparison.

16. The endpoint of an angle bisector matters

Try it. Can a segment bisect an angle without starting from the angle’s vertex?

What to draw and why. The bisector is a ray from the vertex. A line elsewhere may be parallel to it but does not divide the original vertex angle into two equal angles.

Where the first mistake begins. Checking only its general direction and ignoring where it begins.

17. A 45-degree direction follows a right angle

Try it. Construct 45 degrees without relying solely on visual estimation.

What to draw and why. First construct a 90-degree angle with perpendicular lines, then bisect the right angle to obtain 45 degrees.

Where the first mistake begins. Drawing a guessed diagonal across square grid paper without ensuring square spacing.

18. Construct 60 degrees from an equilateral triangle

Try it. Given baseline AB, how can a compass establish a 60-degree angle?

What to draw and why. Draw arcs of radius AB centred at A and B. Their intersection C makes AB=AC=BC; triangle ABC is equilateral, so each internal angle is 60 degrees.

Where the first mistake begins. Changing radius between the two arcs or selecting a point that does not meet both equal-distance conditions.

19. Construct 30 degrees from 60

Try it. How do you construct a 30-degree angle using the previous result?

What to draw and why. First construct 60 degrees using the equilateral-triangle method, then bisect that angle. Both halves are 30 degrees.

Where the first mistake begins. Claiming a visual half of a 60-degree sketch is necessarily exact without an angle-bisector construction.

20. Construct a 120-degree angle

Try it. How may a 120-degree angle be obtained from a constructed 60-degree direction?

What to draw and why. Extend one side of a 60-degree angle through the vertex to create a straight line. The adjacent supplementary angle is 180−60=120 degrees.

Where the first mistake begins. Mistaking an exterior supplement for another 60-degree interior angle.

21. A set square is for right angles

Try it. A diagram needs a straight 90-degree edge at point P on a baseline. Which tool helps?

What to draw and why. A suitable set square aligned with the baseline can establish a perpendicular through P; a compass-and-ruler perpendicular construction also works.

Where the first mistake begins. Using a protractor edge or an arbitrary notebook corner without checking its 90-degree geometry.

22. A protractor must be centred at the vertex

Try it. Measure an angle AOB with a protractor. Where does its centre go?

What to draw and why. Place the protractor’s centre precisely over O and align the zero baseline with one arm, then read where the second arm meets the scale.

Where the first mistake begins. Placing the centre at A or B because that letter appears first.

23. Read the correct protractor scale

Try it. One protractor scale reads 40 degrees and the other 140 at the same direction. Which is correct?

What to draw and why. Choose the scale starting at zero on the arm you aligned; its reading matches the measured opening, 40 or 140 depending on the actual diagram.

Where the first mistake begins. Picking the smaller printed value automatically without reading the starting direction.

24. Construct a triangle from three sides

Try it. Draw a triangle with sides 4 cm, 5 cm and 6 cm.

What to draw and why. Draw the 6-cm baseline AB. From A draw an arc radius 4 cm, from B an arc radius 5 cm. Their intersection C gives AC=4 and BC=5; join AC and BC.

Where the first mistake begins. Drawing an attractive triangular outline first, then altering lengths to fit the outline.

Check the construction. Construction begins with the stated measurements. There may be two mirror-image placements on opposite sides of the baseline, both valid if the question permits either orientation. A plausible drawing that ignores one length or angle does not fulfil the data.

25. Check triangle inequality before construction

Try it. Can lengths 2 cm, 3 cm and 6 cm form a triangle?

What to draw and why. No. The sum of the two shorter sides is 5 cm, below the longest 6 cm, so the compass arcs cannot meet in a nondegenerate triangle.

Where the first mistake begins. Continuing to force arcs to meet and assuming the instrument is faulty.

26. Recognise a flat degenerate case

Try it. Can lengths 3 cm, 4 cm and 7 cm form an ordinary triangle?

What to draw and why. No. Since 3+4=7, the three segments can line up in a straight arrangement, not a nondegenerate triangle.

Where the first mistake begins. Treating equality as sufficient when a positive-area triangle requires the two shorter lengths to total more than the longest.

27. Construct an equilateral triangle

Try it. Draw an equilateral triangle with side 5 cm.

What to draw and why. Draw AB=5 cm. Without changing the opening, draw radius-5 arcs from A and B. Join either intersection to A and B, creating three equal 5-cm sides.

Where the first mistake begins. Measuring only one side and assuming the other two are equal by appearance.

28. Construct an isosceles triangle

Try it. Draw triangle ABC with base AB=6 cm and AC=BC=5 cm.

What to draw and why. Draw AB=6. From each endpoint draw radius-5 arcs; choose a common intersection C. Join the sides and mark AC=BC.

Where the first mistake begins. Using arc radii 5 cm and 6 cm would not guarantee the specified equal sides.

29. Construct a right triangle by two legs

Try it. Draw a right triangle with perpendicular sides 3 cm and 4 cm.

What to draw and why. Draw AB=4 cm; erect a perpendicular at A and mark AC=3 cm. Join B to C. The sides AB and AC meet at 90 degrees.

Where the first mistake begins. Drawing a triangle with side lengths three and four but no perpendicular angle.

30. Construct with side-angle-side data

Try it. A triangle has AB=5 cm, AC=4 cm and included angle BAC=60 degrees.

What to draw and why. Draw AB=5 cm. Construct a 60-degree ray at A, mark C four centimetres along it, then join BC.

Where the first mistake begins. Placing the 60-degree angle at B instead of the stated vertex A.

31. Measure a resulting triangle’s third side

Try it. An accurately constructed right triangle has legs 6 cm and 8 cm. What should its third side measure?

What to draw and why. Pythagoras gives a 10-cm hypotenuse. Measure the drawn line as a check; small drawing errors may create small deviations.

Where the first mistake begins. Assuming a hand-drawn reading is more exact than the geometric relationship.

32. Two mirror-image triangle constructions

Try it. Two compass arcs cross both above and below a baseline. Are both resulting triangles possible?

What to draw and why. Yes. The two intersection points produce reflected triangles with the stated three side lengths, provided orientation was not constrained.

Where the first mistake begins. Treating the second intersection as an error merely because it lies below the baseline.

33. Test a construction through the perpendicular bisector property

Try it. A pupil finds M as midpoint of AB=8 cm. What lengths should AM and MB be?

What to draw and why. Each is 4 cm, and the perpendicular bisector should also meet AB at a right angle.

Where the first mistake begins. Checking the midpoint alone and forgetting the perpendicular condition.

34. Distinguish a median from a perpendicular bisector

Try it. A line joins a triangle vertex to midpoint of the opposite side. Must it be perpendicular?

What to draw and why. No. Such a segment is a median. It may be perpendicular in special triangles, but not for a general scalene triangle.

Where the first mistake begins. Calling every segment through a midpoint a perpendicular bisector.

35. Distinguish an altitude from an angle bisector

Try it. A perpendicular segment drops from a triangle vertex to the opposite side. Must it bisect the vertex angle?

What to draw and why. No. It is an altitude, and it need not split the angle into equal parts.

Where the first mistake begins. Assuming a right-angle marker at the base automatically means equal angles at the vertex.

36. A rectangle requires right angles, not just equal-looking sides

Try it. Construct a rectangle with side lengths 4 cm and 7 cm.

What to draw and why. Draw a 7-cm segment. Construct perpendiculars at its endpoints, mark 4 cm on each in the same direction and join their ends.

Where the first mistake begins. Drawing a parallelogram with sloping sides while calling it a rectangle.

37. A square needs equal sides and right angles

Try it. Construct a square of side 5 cm.

What to draw and why. Draw a 5-cm baseline and two perpendiculars at its endpoints. Mark equal 5-cm sides on the same side of the baseline and join the marks.

Where the first mistake begins. Checking only that all sides seem equal without verifying corners are 90 degrees.

38. Measure from ruler zero, not the physical edge

Try it. A ruler has its 0-cm mark 2 mm from the plastic edge. Where should a 6-cm segment begin?

What to draw and why. Begin at the printed zero mark and end at 6 cm, or use two clear printed marks six centimetres apart.

Where the first mistake begins. Starting at the ruler edge and getting a segment 2 mm too long.

39. What to leave visible in a compass construction

Try it. A student erases every arc after drawing a bisector. What evidence is lost?

What to draw and why. The equal-radius arcs that justify the construction may be erased. Leave them visible when the task requires construction working.

Where the first mistake begins. Treating all auxiliary lines as messy errors instead of part of the method.

40. Angle units are degrees here

Try it. A protractor indicates 75 degrees and a student writes 75 cm. What should be corrected?

What to draw and why. Report 75 degrees. The protractor measures angle opening, not linear length.

Where the first mistake begins. Using the unit from a preceding side measurement without reading the present question.

41. Check a 30-degree bisector

Try it. A 60-degree angle is bisected; a pupil measures parts of 29 and 31 degrees. Are they exact halves?

What to draw and why. The intended exact result is 30 and 30 degrees. The measurements suggest drawing or reading error.

Where the first mistake begins. Calling unequal measured angles the exact construction because their sum is 60.

42. Check a constructed SSS triangle twice

Try it. A constructed triangle should have sides 5,5,8 cm. What two checks matter?

What to draw and why. Measure all three sides and confirm the two five-centimetre sides are equal. Then check the baseline eight centimetres matches the given data.

Where the first mistake begins. Measuring only the two equal sides and forgetting the specified base.

43. Use bisector language in a location model

Try it. Two marked points A and B represent equal-distance attractions in a fictional park plan. Where are possible points equally distant from both?

What to draw and why. They lie on the perpendicular bisector of AB in the flat-plane model.

Where the first mistake begins. Claiming they must lie at the one midpoint only; there is a whole perpendicular line of such positions.

44. The angle-bisector locus uses perpendicular distances

Try it. A point P is equally far from both sides of angle AOB (inside the angle). Where can P lie?

What to draw and why. P lies on the internal angle bisector when ‘far’ means shortest perpendicular distance to the side lines.

Where the first mistake begins. Using distances to arbitrary chosen points on each arm instead of perpendicular distances.

Four different first-line mistakes

error-radius

A learner makes arcs from A at one compass radius, then adjusts the radius for arcs from B. Their meeting points no longer guarantee equal distances from the endpoints. The resulting line may look approximately perpendicular yet lack the defining symmetry. Repair this by marking the chosen opening first and practising two alternating arcs without turning the adjustment wheel. Recheck the midpoint and right angle at the end.

error-start

The pupil is instructed to draw 6 cm but begins measuring from the physical edge of a ruler that starts before its printed zero. The line is longer than the intended segment and subsequent arcs may not intersect correctly. Have the pupil choose two printed marks whose difference is exactly six centimetres. A simple measurement audit is often enough.

error-vertex

The student may use a protractor to mark half the angle yet start the bisecting segment from a point on an arm. The line looks centred, but it does not divide the original angle into two vertex angles. Return to the common vertex O, mark the inner intersection P, and join OP. Then explain which two angles are equal.

error-proof

When the problem explicitly requests a construction, the arcs show how equal-distance relations were established. Removing every auxiliary mark may make it harder to assess whether a line was constructed or guessed. Keep them light but visible and label the final segment clearly. Teaching neatness should not erase mathematical evidence.

An illustrative 90-minute three-pupil Mathematics session

The immutable eduKateSG Clementi small-group Mathematics reference describes tutorials of three pupils over 90 minutes near Sixth Avenue MRT. A useful Secondary 2 G1 session can give each learner a different baseline angle or segment length, then ask all three to justify their bisectors. This is a pedagogical illustration; it does not establish current class openings or guarantee identical weekly lesson plans.

First 10 minutes: inspect ruler zeros, compass opening and protractor alignment.
Next 20 minutes: model perpendicular bisector using equal-radius arcs and midpoint verification.
Next 25 minutes: each learner constructs an angle bisector on a differently oriented diagram.
Next 15 minutes: use the same tools to construct an SSS or SAS triangle and explain the data constraints.
Next 10 minutes: independent construction without model pictures, leaving necessary arcs visible.
Final 10 minutes: check the first inaccurate step and plan one short retest at home.

A tutor should not treat all untidy diagrams as one mistake. The issue may be measurement zero, compass handling, incorrect geometry, wrong protractor scale or a line drawn from the wrong vertex. The most useful feedback names the specific step and lets the pupil reconstruct it independently.

A six-day practice plan for families

Day 1: draw three accurate measured segments and mark their true midpoints.
Day 2: construct two perpendicular bisectors with different orientations and preserve the arcs.
Day 3: bisect a 60-degree and a 100-degree angle; use a protractor only as a check.
Day 4: construct one equilateral and one isosceles triangle from stated lengths.
Day 5: construct a right triangle and check both perpendicularity and side lengths.
Day 6: cover the instructions, redo the least reliable construction, and explain why it works.

A parent can be a good audience without performing the construction. Ask: ‘Which two distances are equal?’ ‘Where is the vertex?’ ‘How do you know this is 90 degrees?’ The learner who can explain and repeat an independent drawing has built more useful understanding than one who produces a beautiful copy of the teacher’s diagram.

G1 Mathematics, Secondary Two and the eventual SEC

MOE’s 2020 G1 Mathematics Secondary Two outline includes constructing simple geometrical figures from given data, properties of perpendicular bisectors and angle bisectors, and appropriate use of compass, ruler, set square and protractor. The 2027 G1 SEC K110 syllabus carries the relevant Geometry and Measurement content. That published 2027 examination is a reference for its graduating candidates, not the actual current paper for a child in Secondary 2 in 2026. Follow the teacher’s present topic list and later check the relevant cohort syllabus.

Frequently asked questions

faq1

No. A perpendicular bisector passes through a segment’s midpoint at 90 degrees. A triangle median joins a vertex to the opposite side’s midpoint; it need not be perpendicular.

faq2

A ruler can draw a straight bisecting ray after the defining points are established, but simply guessing the direction is not a geometric construction. Use the requested compass or protractor method.

faq3

A smaller radius produces no two intersections; more than half the segment allows the matching arcs to intersect on opposite sides of the segment.

faq4

Yes. If an SSS construction has two intersections above and below the baseline, both reflected placements satisfy the same side lengths unless orientation is constrained.

faq5

Yes, the official MOE content-by-level outline places simple constructions and bisectors in Secondary Two G1. The school’s topic schedule is still the correct guide for the next assessment.

faq6

Ask to see a first-step diagnosis on a real construction and evidence that the pupil can redo the work without a drawn model. A three-pupil format helps when feedback is genuinely individual.

Official curriculum references and reader note

Reader note: All construction questions and examples here are original learning explanations, not copied examination diagrams. Small variations in manual measurement are possible; retain the defining geometric reasoning. This article does not establish a current fee, a vacancy, a grade guarantee or the exact room for a tuition lesson.

Bring an unfinished compass construction and a marked geometry question to a consultation with eduKate Singapore. Ask the tutor to identify whether the first problem is geometry, instrument handling or interpretation before deciding what to practise.

Secondary 2 G1 Mathematics Tutor Bukit Timah | Geometrical Constructions and Angle Bisectors