Question

2. By finding the size of each exterior angle of a regular decagon, find the size of each interior angle of the decagon ​

Answer 1

Explanation:

Every exterior is 360

So 36 for each exterior.

Decagon interior is 1440

So each interior angle is 144

Answer 2

interior angle = 144°

Explanation:

A decagon has 10 sides

The sum of the exterior angles of a polygon is 360° , then

exterior angle = 360° ÷ 10 = 36°

The sum of an exterior angle and an interior angle = 180° , then

interior angle = 180° - 36° = 144°