Question

A window is designed as shown below. Find the value of x.

Answer 1

x = 18°

Explanation:

Angles on a triangle add up to 180°

x + 8x + x = 180°

10x = 180°

x = 180° ÷ 10

x = 18°

Answer 2

x = 18

Explanation:

x° + 8x° + x° = 180° (Linear pair angles)

10x° = 180°

x° = 180°/10

x° = 18°

x = 18