Question

1. in this polygon, which angle is an interior angle? options: b°, c°, d°, a°

Explanation:

An interior angle of a polygon is formed inside the closed shape by two adjacent sides. Angles A°, B° are exterior "notches" outside the main polygon, and D° is formed outside the polygon by an extended side. Only C° is located inside the closed boundary of the polygon, between two of its sides.

Answer:

C. $C^\circ$