# NCERT Class 7 Mathematics Solutions: Chapter 6 –The Triangle and its Properties Exercise 6.2 Part 1

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1. Find the value of the unknown exterior angle in the following diagrams:

Answer:

(i) Consider

And

Exterior angle theorem

(ii) Consider

And

Exterior angle theorem

(iii) Consider

And

Exterior angle theorem

(iv) Consider

And

Exterior angle theorem

(v) Consider

And

Exterior angle theorem

(vi) Consider

And

Exterior angle theorem