8.1.4 Interior and Exterior Angles - Polygons

This polygon is...

• Convex

• Concave (non-convex)

Tags

CCSS.2.G.A.1

Find the number of sides in a regular polygon if each interior angle is 156°

• 10

• 13

• 15

• 16

A regular polygon has 13 sides. Find the measure of one interior angle in this polygon.

• 1980

• 143.6

• 167

• 152.3

This polygon is...

• Convex

• Concave (non-convex)

Tags

CCSS.2.G.A.1

How many sides does a polygon have if the sum of the measures of the interior angles is 900º?

• 6

• 7

• 8

• 9

This polygon is...

• Convex

• Concave (non-convex)

Tags

CCSS.2.G.A.1

Esteban used a hinged mirror to create an equilateral triangle, as shown in the diagram. If the area of the shaded region is 11.42 square inches, what is the area of the entire equilateral triangle?

• 11.42

• 57.1

• 130.41

• 68.52

Tags

CCSS.6.G.A.1

Find the number of sides in a regular polygon if each interior angle is 140°

• 7

• 8

• 9

• 10

Find the area. Hint:  $\frac{bh}{2}$  so you need to find the height first

• 13.85

• 27.6

• 16

• 17.88

Tags

CCSS.6.G.A.1

This polygon is...

• Convex

• Concave (non-convex)

Tags

CCSS.2.G.A.1