Polygons

What is a regular polygon?

• A regular polygon is a polygon that has all sides and angles equal.

• A regular polygon is a polygon that has all sides and angles unequal.

• A regular polygon is a polygon that has all angles equal but sides can be different.

• A regular polygon is a polygon that has all sides equal but angles can be different.

The best description of these two shapes is

• Both convex

• Left one is convex and right one is concave

• Left one is concave and right one is convex

• Both concave

• Neither are convex or concave

What is the name of the figure?

• Triangle

• Pentagon

• Hexagon

• Octagon

The measure of an interior angle of a regular polygon is 120°. What is the measure of an exterior angle?

• 120

• 60

• 180

Determine the value of x.

• 103

• 463

• 83

An interior angle of a polygon and the exterior angle at the same vertex are ______. Select ALL that apply.

• a linear pair

• supplementary

• vertical

What is the sum of the interior angles of a 17-gon?

• 3060

• 2700

• 1700

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

• 150

• 30

• 180

What is the measure of one exterior angle of a regular heptagon?

• 51.4

• 60

• 72

A _______ polygon has diagonals that do not ever fall outside the polygon.

• convex

• concave