Angles and Polygons

What formula do you use to find the sum of the interior angles in a polygon?

• 180°

• (n - 2)180°

• (n - 3)180°

• (n)180°

What is the sum of the interior angles of a nonagon?

• 720°

• 900°

• 1080°

• 1260°

What is the measure of one interior angle of a regular octagon?

• 120°

• 135°

• 180°

• 1080°

step 1: set up an equation

step 2: Solve for x

step 3: Plug in x for each expression

step 4: Add the two answers from step 3

• 82

• 41

• 17

• 90

Tags

CCSS.HSG.CO.C.11

step 1: set up an equation

step 2: Solve for x

step 3: Plug in x for each expression

step 4: Add the two answers from step 3

• 82

• 41

• 17

• 90

Tags

CCSS.HSG.CO.C.11

What is the sum of the interior angles of a hexagon?

• 180°

• 360°

• 540°

• 720°

What is the sum of the interior angles of a quadrilateral?

• 180°

• 360°

• 540°

• 720°

What is the classification of a polygon whose angle sum is 900°?

• Pentagon

• Heptagon

• Nonagon

• 11-gon

What is the sum of the exterior angles in a hexagon?

• 180°

• 360°

• 540°

• 720°

What is the sum of the exterior angles in a 15-gon?

• 180°

• 360°

• 540°

• 720°