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

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Understanding of exterior angle theorem

Understanding of Exterior Angle Theorem

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

Triangle Made with 50 Degree and 70 Degree Angle

65 Degree and 45 Degree Angle Are Shown in Figure

30 Degree and 40 Degree Angle Are Shown in Triangle

Triangle Which is Made 60 Degree and 60 Degree Angle

Triangle Which Made 50 Degree and 50 Degree Angle

Triangle in 30 Degree and 60 Degree Angle

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