Angles of Polygons

What is the sum of the interior angles of an octagon?

1080°

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

108°

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

1260°

What is the measure of ONE interior angle of a regular decagon?

144°

What is the measure of ONE interior angle of a regular 16-gon?

157.5°

sum of interior angles of a polygon formula

180(n-2)

What is the sum of the measures of the interior angles of a triangle?

180°

What is the measure of ONE exterior angle of a regular 16-gon?

22.5°

sum of exterior angles of a polygon

360°

What is the measure of ONE exterior angle of a regular decagon?

36°

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

540°

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

60°

What is the measure of ONE interior angle of a regular triangle?

60°

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

720°

What is the measure of ONE exterior angle of a regular pentagon?

72°

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

900°

What is the measure of ONE interior angle of a regular quadrilateral?

90°