Practice Summary (7.1) - Chapter 2 : Triangles - CBSE Class 9 Maths
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Summary

Practice - Summary

Learning

Practice Questions

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Question 1 Easy

What is a triangle?

💡 Hint: Think about how many corners are in a triangle.

Question 2 Easy

What does congruent mean?

💡 Hint: Consider if two triangles could fit on each other perfectly.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does SSS stand for in triangle congruence?

Same Side Same Angle
Side-Side-Side
Side-Side-Angle

💡 Hint: Think about the sides of the triangles.

Question 2

A triangle has sides 3 cm, 4 cm, and 8 cm. Does it satisfy the triangle inequality?

True
False

💡 Hint: Add the smallest two sides.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given two triangles, one has sides 5 cm, 7 cm, and 9 cm. The other has sides 5 cm, 7 cm, and 12 cm. Are these triangles congruent? Why or why not?

💡 Hint: Compare the longest side against the sum of the others.

Challenge 2 Hard

You have a triangle with two angles measuring 45 degrees. If the third angle must also be included, what is the value of that angle and why?

💡 Hint: Recall the triangle sum theorem.

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