CAIE IGCSE Mathematics Extended E4.2.2 Construct a Triangle Given the Lengths of All Sides Using a Ruler and Questions

Practise Extended CAIE IGCSE Mathematics by using ruler-and-compass arcs to construct and verify triangles.

Exam points

Construct a triangle from the lengths of all three sides using ruler and compasses.
Use accurate construction arcs and intersections to locate the triangle vertices.
Interpret a completed construction and verify the given side lengths.

[Maximum number: 3]

In triangle $A B C, A C=21 \mathrm{~m}$ and $B C=15.9 \mathrm{~m}$ .
Using a ruler and compasses only, complete the scale drawing of the triangle.
Use a scale of 1 cm to represent 3 m.
The side AB is drawn for you.

Figure for Question CAIE IGCSE Mathematics Extended E4.2.2 Construct a Triangle Given the Lengths of All Sides Using a Ruler and Questions question 1 — CAIE IGCSE Mathematics Extended

Scale : 1 cm to 3 m

Correct triangle constructed with
$A C=7 \mathrm{~cm}$ and $B C=5.3 \mathrm{~cm}$
and intersecting arcs

B2 for correct triangle with no incorrect arcs or for a triangle with reversed sides with correct arcs

or B1 for any triangle with a side of 7 cm or a side of 5.3 cm

or for $7[\mathrm{~cm}]$ or $5.3[\mathrm{~cm}]$ soi

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CAIE IGCSE Mathematics Extended E4.2.2 Construct a Triangle Given the Lengths of All Sides Using a Ruler and Questions question 1