Angles of Polygons Review

A convex heptagon has interior angles that measure 130°, 110°, 135°, 95°, 120°, and 115°. What is the measure of the seventh interior angle?

• 190

• 555

• 97.5

• 128.57

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

• 210

• 105

• 390

• 195

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

• 19

• 13

• 15

• 550800

What is the measure of x?

• 122

• 58

• 540

• 180

What is the measure of x if one interior angle is 3x-3?

• 120

• 720

• 180

• 41

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 y.

• 51.7

• 46

• 360

• 60

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