NCERT Class 7 Mathematics Solutions: Chapter 6 – the Triangle and Its Properties Exercise 6.2 Part 1 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Understanding of Exterior Angle Theorem

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