Practice Pairs of Angles - 6.4 | 6. Lines And Angles | CBSE 9 Mathematics
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

6.4 - Pairs of Angles

Enroll to start learning

You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

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.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

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.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

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

💡 Hint: Use the supplementary angle definition.

Question 2

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.

Challenge and get performance evaluation