Interior Angles in Polygons (with Nearpod)

What is the SUM of the angle measures in a nonagon (9 sides)?

• 1440°
• 900°
• 1080°
• 1260°

Tags

CCSS.4.MD.C.5

CCSS.4.MD.C.7

What is the measure of EACH interior angle of a regular triangle?

• 60°

• 90°

• 120°

• 180°

Find the value of X.

Hint: Find the sum of the interior angles for the polygon first!

• 100

• 120

• 125

• 130

Find the measure of the missing angle.

• 139°

• 66°

• 138°

• 116°

Which formula represents how to find the measure of EACH interior angle of a regular polygon?

• $\frac{\left(n-2\right)180}{n}$
  

• $\frac{\left(n+2\right)180}{n}$
  

• $\frac{\left(n-2\right)180}{2}$
  

• $\left(n-2\right)180$
  

Find the value of x. HINT: Find the interior angle sum for this polygon first!

• 110

• 90

• 130

• 120

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

• 180°

• 540°

• 720°

• 1080°

What is the measure of EACH interior angle of the regular nonagon shown?

• 140°

• 120°

• 1080°

• 1260°

What is a regular polygon? Pick both correct answers.

• all side lengths are the same length

• all angles are the same (equal in measure)

• only some side lengths are the same

• all side lengths are different

• only some angles are the same