NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties Ex 6.2

# NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties Ex 6.2

## NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties Ex 6.2

NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties Ex 6.2 are the part of NCERT Solutions for Class 7 Maths. Here you can find the NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties Ex 6.2.

### Ex 6.2 Class 7 Maths Question 1.

Find the value of the unknown exterior angle x in the following diagrams:

Solution:
(i)
x = 70° + 50° = 120°       (Exterior angle is equal to the sum of its opposite interior angles)
(ii)
x = 45°+ 65° = 110°        (Exterior angle is equal to the sum of its opposite interior angles)
(iii)
x = 40° + 30° = 70°        (Exterior angle is equal to the sum of its opposite interior angles)
(iv)
x = 60° + 60° = 120°      (Exterior angle is equal to the sum of its opposite interior angles)
(v)
x = 50° + 50° =100°        (Exterior angle is equal to the sum of its opposite interior angles)
(vi)
x = 60° + 30° = 90°        (Exterior angle is equal to the sum of its opposite interior angles)

### Ex 6.2 Class 7 Maths Question 2.

Solution:
(i) x + 50° = 115°         (Exterior angle of a triangle)
x = 115° – 50° = 65°
(ii)
x + 70° = 100°        (Exterior angle of a triangle)
x = 100° – 70° = 30°
(iii)
x + 90° = 125°      (Exterior angle of a right triangle)
x = 125° – 90° = 35°
(iv)
x + 60° = 120°       (Exterior angle of a triangle)
x = 120° – 60° = 60°
(v)
x + 30° = 80°          (Exterior angle of a triangle)
x = 80° – 30° = 50°
(vi)
x + 35° = 75°        (Exterior angle of a triangle)
x = 75° – 35° = 40°

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