A road sign is in the shape of a regular heptagon. What is the measure of each angle on the sign? Round to the nearest tenth.

128.6

900

64.3

231.4

Answer

A) 〖128.6〗^o

Explanation

The question requires us to find the interior angle of a regular heptagon.

To do this first calculate the exterior angle of that polygon.

The sum of exterior angles is 360o. A heptagon has 7 sides.

So, one exterior angle = 〖360〗^o/7=〖51.4〗^o

interior angle+exterior angle=〖180〗^o

exterior=180-51.4=〖128.6〗^o