Interior and Exterior Angles of Polygons

Front

What is the measure of ONE interior angle in a regular hexagon?

Back

120°

Front

What is the measure of ONE interior angle in a regular pentagon?

Back

108°

Front

What is the sum of the interior angles of a hexagon?

Back

720°

Front

What is the sum of the angle measures in a DECAGON (10 sides)?

Back

1440°

Front

How do you calculate the sum of the interior angles of a polygon?

Back

(n - 2) × 180°, where n is the number of sides.

Front

What is the measure of ONE exterior angle in a regular polygon?

Back

360° / n, where n is the number of sides.

Front

What is the relationship between interior and exterior angles of a polygon?

Back

Interior angle + Exterior angle = 180°.

Front

How many sides does a polygon have if the sum of its interior angles is 1080°?

Back

8 sides (octagon).

Front

What is the measure of ONE interior angle in a regular octagon?

Back

135°.

Front

What is the measure of ONE exterior angle in a regular hexagon?

Back

60°.