Angle Sum Polygons

The sum of the interior angles in a polygon is 3,240^o.  How many sides are in the polygon?

• 10

• 582,840

• 18

• 20

Find the value of X.

• 100

• 120

• 125

• 130

Find the measure of the missing angle

• 50°

• 35°

• 100°

• 55°

Tags

CCSS.8.G.A.5

Find the measure of the missing angle

• 95

• 85

• 35

• 45

Tags

CCSS.8.G.A.5

What is the interior angle sum of a pentagon? (5-gon)

• 540 degrees

• 720 degrees

• 360 degrees

Answer explanation

Pentagon like THE Pentagon

What is the interior angle sum a hexagon? (6-gon)

• 540 degrees

• 720 degrees

• 900 degrees

Answer explanation

Hexagon like in a beehive!

What is the interior angle sum of a octogan? (8-gon)

• 1080 degrees

• 900 degrees

• 720 degrees

Answer explanation

Octagon like an octapus! (8 tentacles)

What is the interior angle sum of a nonagon? (9-gon)

• 1260 degrees

• 360 degrees

• 900 degrees

What is the interior angle sum of a decagon? (10-gon)

• 900 degrees

• 180 degrees

• 1440 degrees

What is the interior angle sum of an n-gon

• n degrees

• (n-2)*180 degrees

• n-2