NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 6: Triangles - Problems and Solutions
Question 108

Question. 108

In Fig. 6.30, find the value of x.

Answer:

x = 35°

Detailed Answer with Explanation:

In Δ, top angles = 55° + 40° = 95°. So base angles sum = 180° − 95° = 85°. Given isosceles property, left angle = 35°.