Angles on a straight line sum to 180°

P5 Mathematics · Measurement & Geometry · 125 questions · difficulty D1–D5 · Singapore MOE-aligned

Sample questions

SAMPLE 1

Two intersecting lines form an angle of 70°. What is the angle on the same straight line with this angle?

SAMPLE 2

Three angles on a line are 20°, 90°, and x. Find x.

SAMPLE 3

Two angles on a straight line are 110° and x. What is the value of x?

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