the answer:
for answering this question, we have exactly to cases:
case 1: if the polygons are regular
so the answer is
The sum of the measures of the angles is equal to 360°.
for example, let's consider the quadrilateral polygone ( the four sides are congruent and each angle measures 90°)
so the sum of the angle is 90° +90°+90°+90°= 360°
case 2
if the polygons are not regular (irregular)
the answer is
The sum of the measures of the angles is greater than or less than 360°.
for example, if we consider an irregular polygon of 7 sides that not congruent, and each angle are not congruent, so the sum of the measures of the angles must be greater than or less than 360°
