Question

Find the sum of angles of a 12 sided polygon ?

number of sides=12
sum of angles=180°
=------------​

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 1800 degrees (from above)... And there are twelve angles... So, the measure of the interior angle of a regular dodecagon is 150 degrees.