Question

The drawing below is of a regular pentagon. The measure for each interior angle in a regular pentagon is 108°. Angle A is supplementary to an interior angle of the pentagon. How many degrees is angle A​

Answer 1

• 72°

Explanation:

The interior and exterior angles are supplementary:

• A + 108° = 180°
• A = 180° - 108°
• A = 72°