Angles of Polygons Review

The floor plan for a modern home is modeled by the composite of the regular octagon and regular quadrilateral. What is the measurement of ∠𝑨𝑩𝑪?

• 90

• 45

• 135

• 180

The sum of the interior angles of a polygon is 3060°. How many sides does the polygon have?

• 19

• 13

• 15

• 550800

Find the value of y.

• 51.7

• 46

• 360

• 60

A polygon is shown below. What is the measure of ∠𝑼?

• 210

• 105

• 390

• 195

A regular polygon has the vertices A, B, C, D, E, and H. What is the measurement of ∠𝑪?

• 720

• 120

• 360

• 60

• 3

• 72

• 5

• 180

What is the measure of each exterior angle of a regular nonagon?

• 140

• 180

• 60

• 360

Find the value of x

• 141

• 150

• 135

• 163

Solve for x.

• 120

• 30

• 80

• 90

What is the sum of the exterior angles of a 20-gon?

• 180

• 360

• 3240

• 162