Practice Introduction - 6.1 | 6. Lines And Angles | CBSE 9 Mathematics
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6.1 - Introduction

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What do you call the angles that sum up to 90Β°?

πŸ’‘ Hint: Think about complementary - what does it mean?

Question 2

Easy

Define a ray in geometry.

πŸ’‘ Hint: What is the defining characteristic of a ray?

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 angles that sum to 180Β°?

  • Complementary
  • Supplementary
  • Adjacent

πŸ’‘ Hint: Think about the prefix 'sup' in supplementary.

Question 2

True or False: Vertically opposite angles are always equal.

  • True
  • False

πŸ’‘ Hint: Reflect on what happens at the intersection of lines.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given two intersecting lines form an angle of 75Β° and its vertically opposite angle, calculate and find all four angle measures formed.

πŸ’‘ Hint: Think about the relationships of intersecting angles.

Question 2

You construct a triangle with one angle measuring 45Β°, find the other two angles if they are supplementary to 90Β°.

πŸ’‘ Hint: Remember the properties of triangles and angles.

Challenge and get performance evaluation