Interior Angle Regular Polygon

b. Find the measure of one interior angle for the regular polygon.

Find the sum of the interior angles for the polygon.

What is the measure of one INTERIOR angle of a regular octagon?

• 60

• 45

• 1080

• 135

What is the SUM of the INTERIOR angles of a 12-gon?

• 3600

• 1800

• 2160

• 12

A polygon has a sum of interior angle measures equal to 1620°. How many sides does the polygon have?

• 9

• 11

• 13

• 7

The sum of the interior angles of an n-sided polygon is given by the expression (n - 2) * 180. Find the interior angle sum for a nonagon.

• 1260 degrees

• 1440 degrees

• 1520 degrees

• 1620 degrees

The sum of the interior angles of a dodecagon is given by the expression (n - 2) * 180. Find the interior angle sum for a dodecagon.

• 1440 degrees

• 2160 degrees

• 1800 degrees

• 1620 degrees

Pentagon PQRST above models one side of a building. The sum of the interior angles of the pentagon is 540 degrees, the measure of angle R is 100 degrees, and angle Q is congruent to angle S. What is the measure of angle Q?

• 92 degrees

• 130 degrees

• 106 degrees

• Not here

What is the measure of each interior angle of a regular octagon?

• 135

• 180

• 145

• 190

The measures of one interior angle of a regular polygon is 140^o. What is the name of the polygon?

• Decagon

• Nonagon

• Heptagon

• Hexagon