Question

Determine the missing angle.

Answer 1

50°

Explanation:

x = ?°

x + 40° = 90°

x = 90° - 40°

x = 50°

Answer 2

The angle at the vertex of a rectangle is 90°

So, it means that,

= ? + 40 = 90

= ? = 90 - 40

= ? = 50