NCERT Class 7 Mathematics Solutions: Chapter 6 – the Triangle and Its Properties Exercise 6.2 Part 2 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Understanding of Interior Opposite Angles

1. Find the value of the unknown interior angle in the following figures:

Triangle Made with 50 Degree and 70 Degree Angle
Triangle in 50 Degree and 115 Degree Angle
90 Degree and 125 Degree Angle Given in Triangle
60 Degree and 120 Degree Angle Are Given
Triangle Which is Made with 80 Degree and 30 Degree Angle
Triangle Made with 35 Degree and 75 Degree Angle

Answer:

(i) Consider

And

Exterior angle = Sum of interior opposite angles

(ii) Consider

And

Exterior angle = Sum of interior opposite angles

(iii) Consider

And

Exterior angle = Sum of interior opposite angles

(iv) Consider

And

Exterior angle = Sum of interior opposite angles

(v) Consider

And

Exterior angle = Sum of interior opposite angles

(vi) Consider

And

Exterior angle = Sum of interior opposite angles