Question

What is the measure of each interior angle of a regular decagon (10 sides)?

Answer 1

All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the angles, we know that the sum of all the angles is 1440 degrees (from above)... And there are ten angles... So, the measure of the angle of a regular decagon is 144 degrees.

Answer 2

6)a

if we put n as the number of sides in a regular polygon, the formula to find the measure of each angle is

`((n - 2) * 180)/(n)`
so the answer will be

`((10 - 2) * 180 )/(10) = (1440)/(10) = 144`
they each measures 144 degrees




good luck