Polygon Interior Angle Sum Expressions

b. Find the measure of one interior angle for the regular polygon.

Find the value of x.

Tags

CCSS.8.G.A.5

Find the value of x.

Tags

CCSS.8.G.A.5

What is the sum of the interior angles of this polygon?

• a

• b

• c

• d

Find the sum of the interior angle measures of a convex 20-gon.

• 3240 degrees

• 3600 degrees

• 5400 degrees

• 3060 degrees

Which formula is used to find the sum of the interior angles of a polygon?

• 180

• 360

• (n-2)180

• n(n-3)/2

• 9

• 10

• 8

• 7

• 3

• 4

• 5

• 6

What is the sum of the interior angles of a decagon (10-sided polygon)?