Practice Pairs of Angles - 6.4 | 6. Lines And Angles | CBSE 9 Mathematics
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Pairs of Angles

6.4 - Pairs of Angles

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What defines complementary angles?

💡 Hint: Think about what two angles can add up to for them to be complementary.

Question 2 Easy

If two angles are supplementary and one measures 100°, what is the other?

💡 Hint: Recall the definition of supplementary angles.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What are the measures of complementary angles?

90°
180°
360°

💡 Hint: Recall the angle relationship definitions.

Question 2

If two lines intersect, are the vertically opposite angles equal?

True
False

💡 Hint: Reflect on the theorems discussed in this section.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Prove that if three angles are supplementary, and one angle measures 40°, what are the other two?

💡 Hint: Use the supplementary angle definition.

Challenge 2 Hard

Create a diagram of intersecting lines and label all angles. Prove that the vertically opposite angles are equal in your construction.

💡 Hint: Use physical objects if necessary to visualize.

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Reference links

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