Class 7 · Mathematics · Ganita Prakash

5. Parallel and Intersecting Lines

Try question 1

When two lines intersect, vertically opposite angles are

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Answer and explanation

Answer: A. equal

Vertically opposite angles are always equal.

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Try question 2

Angles on a straight line add up to

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Answer and explanation

Answer: B. 180°

A straight angle is 180°.

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Try question 3

Two angles form a straight line. One is 70°. The other is

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Answer and explanation

Answer: B. 110°

180° − 70° = 110°.

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