Sum of the Interior Angles of a Triangle

What is the SUM of the angle measures in a triangle (3 sides)?

• 60°

• 90°

• 120°

• 180°

Find the measure of the missing angle.

• 30^o

• 110^o

• 150^o

• 40^o

Find the measure of the missing angle.

• 8^o

• 58^o

• 122^o

• 64^o

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

Solve for x.

• 63.2

• 116.8

• 135.7

• 45.3

• A) 80°

• B) 90°

• C) 180°

• D) 260°

Using the theorem for the sum of the interior angles of a triangle, find the third angle for each triangle.

Find the value of the unknown.

• 68.5°

• 137°

• 94°

• 43°

Find the sum of the measures of the marked angles

Find the value of the unknown.

• 27°

• 153

• 76.5°

• 77°