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  • Subjects
  • Maths CBSE Live product
  • Class 7 (2026-27)
  • A tale of three intersecting lines

Properties of triangles

Theory

1. Angle properties of a triangle

Practice Questions

1. Is such a triangle possible?

Difficulty: easy

2
2. Calculate the angle ACD

Difficulty: easy

2
3. Find the third angle

Difficulty: easy

3
4. Calculate the interior angle

Difficulty: easy

3
5. TBQ - Find the equal angles of the triangle

Difficulty: medium

3
6. TBQ - Figure out the possibilities

Difficulty: medium

2
7. Prove the following

Difficulty: medium

4
8. Evaluate the unknown value

Difficulty: medium

1
9. TBQ - Find the angle using parallel line

Difficulty: hard

5
10. CBQ - Angle sum property and Exterior angle property

Difficulty: hard

4

Teacher manual

1. Methodical recommendation
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