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Unknown angles in composite figures with quadrilaterals and triangles

P6 Mathematics · Measurement & Geometry · 55 questions · difficulty D1–D5 · Singapore MOE-aligned

Sample questions

SAMPLE 1
In triangle ABC, angle A is 50 degrees and angle B is 70 degrees. What is the measure of angle C?
SAMPLE 2
A triangle is placed on top of a rectangle. The triangle has angles 40 degrees and 60 degrees at its base. The rectangle has a right angle. What is the sum of all marked angles in the figure?
SAMPLE 3
A right-angled trapezium has three angles measuring 90 degrees, 90 degrees, and 60 degrees. What is the measure of the fourth angle?
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