Polygons and Their Angles

Find the sum of the interior angles of a nonagon.

• 1260

• 900

• 1620

• 180

Find the measure of ONE interior angle of a regular dodecagon.

• 150

• 120

• 1800

• 20

Calculate the sum of the interior angle measures of a polygon with 16 sides.

• 2880 degrees

• 2520 degrees

• 344 degrees

• 360 degrees

What is the measure of ONE interior angle in a regular pentagon?

• 90°

• 108°

• 120°

• 180°

Mathematical Equivalence

OFF

Tags

CCSS.7.G.B.5

Find the measure of the indicated angle.

• 35

• 145

• 78

• 67

Tags

CCSS.8.G.A.5

What is the value of x and y?

• x=75°; y=93°

• x=65°;y=104°

• x=75°; y=94°

• x=65°; y=93

Tags

CCSS.HSG.C.A.2

What is the formula for the sum of interior angles in a polygon?

• 180(n−2)

• 180(n−2)÷n

• 360

• 360/n

What is the measure of an exterior angle in a regular 11-gon?

• 147.3 degrees

• 180 degrees

• 360 degrees

• 32.7 degrees

What makes a polygon regular?

• It has 6 sides.

• All angles are congruent.

• All sides are congruent.

• All sides and angles are congruent.

Tags

CCSS.2.G.A.1