Angle Sum Polygons

Solve for the missing angle

• 315 degrees

• 60 degrees

• 90 degrees

• 95 degrees

Tags

CCSS.HSG.C.A.3

Solve for the missing angle

• 65 degrees

• 360 degrees

• 98 degrees

• 180 degrees

Solve for the missing angle

• 70 degrees

• 90 degrees

• 86 degrees

• 92 degrees

Solve for the missing angle

• 21 degrees

• 60 degrees

• 120 degrees

• 39 degrees

Answer explanation

1. Solve for the missing angle in the bottom triangle to see it is 120 degrees.
2. Remember the second missing angle in the top triangle is vertical to the 120 degree angle so it also is 120 degrees.
3. Subtract: 180-120-39=21

Tags

CCSS.8.G.A.5

What is the sum of the interior angles for a 24-gon?

• 3960

• 360

• 15

• 4280

Solve for x. 

• 12

• 10

• 25

• 5

What is the sum of all angles?

• 144

• 1800

• 1440

• 12

Find the value of X.

• 100

• 120

• 125

• 130

Tags

CCSS.3.MD.D.8

If the sum of the interior angles is 3600°, what is the name of the polygon?

• 15-gon

• 18-gon

• 22-gon

• decagon

Find the measure of angle K.

• 9

• 97°

• 48°

• 79°

Tags

CCSS.HSG.C.A.3