Angle Relationships with Triangles

What is the measure of angle b?

• 36^o

• 56^o

• 63^o

• 117^o

Find the value of x by using the exterior angle theorem.

• A

• B

• C

• D

Are the two triangles similar?

• Yes

• No

• Not Enough Information

Find the measure of the angle indicated. 

• 139°

• 66°

• 138°

• 116°

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 

• 45°

• 90°

• 180°

• 360°

What is the third angle of a triangle whose 1st angle is 79 and the 2nd angle is 43?

• 43

• 58

• 72

• 101

Find the indicated angle. (What is ?)

• 91°

• 81°

• 89°

• 109°

Solve for x

• 70

• 23

• 120

• 130

Solve for x

• 60

• 120

• 40

• 65

Are the triangles similar?

• Yes

• No