Angle Relationships, Triangle Sum Theorem

Find the missing angle.  Find x.

• 20^o

• 70^o

• 160^o

• 180^o

Tags

CCSS.7.G.B.5

Solve for x.

• 16

• 11

• 50

• 6

Tags

CCSS.8.G.A.5

Solve for x.

• x = 7

• x = 8

• x = 6

• x = 9

Tags

CCSS.8.G.A.5

Solve for x.

• x = 118

• x = 108

• x = 28

• x = 58

Tags

CCSS.7.G.B.5

• A

• B

• C

• D

Tags

CCSS.8.G.A.5

What is the measure of x?

• 101°

• 111°

• 121°

• 131°

Tags

CCSS.8.G.A.5

Set up an equation that will help you solve for x.

• 60 + 75 + 180 = x

• 60 + 75 + x = 180

• 60 + 75 = x

• 60 + x = 75

Tags

CCSS.8.G.A.5

Triangle Angle Sum Theorem states that the sum of the three interior angles of a triangle always add up to 180 degrees.

Label the three interior angles of a triangle in the picture.

Tags

CCSS.8.G.A.5

Find the measure of the indicated angle.

Tags

CCSS.8.G.A.5

Tags

Exterior Angle Theorem