Angles of Polygons

Determine the number of triangles formed by drawing the diagonals from one vertex in the octagon.

• 6

• 7

• 8

• 10

Find the unknown angle measure.

Tags

CCSS.7.G.B.5

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

• 900°

• 1080°

• 1260°

• 1440°

What is the sum of the interior angles of a 25-gon?

• 360°

• 4500°

• 335°

• 4140°

Find the value of x.

• 100°

• 120°

• 125°

• 130°

Find the measure of angle K.

• 9°

• 97°

• 48°

• 79°

The sum of the interior angles in a polygon is 900^o. How many sides does the polygon have?

• 5

• 9

• 10

• 7

The sum of the interior angles of a polygon is 6,660°. How many sides does the polygon have?

• 41

• 39

• 37

• 33

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

• 90°

• 108°

• 120°

• 180°

The sum of the interior angles in a regular 16-gon is 2,520°. What is the measure of one interior angle?

• 2520°

• 2880°

• 180°

• 157.5°