Sum Interior Angles

Calculate the missing angle measurement. Remember your hint! (All Triangles add up to _____)

Calculate the missing angle measurement. Remember your hint! (All Triangles add up to _____)

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

• 60°

• 90°

• 120°

• 180°

Find the measure of the missing angle.

• 8^o

• 58^o

• 122^o

• 64^o

Find the measure of the indicated angle. 

• 26

• 36

• 85

• 144

Find the measure of the missing angle.

• 30^o

• 110^o

• 150^o

• 40^o

Find the missing angle.

• 29° 

• 39° 

• 49° 

• 59° 

What is the SUM of the interior angles in a triangle (3 sides)?

• 60°

• 90°

• 120°

• 180°

What is the SUM of the interior angles in a pentagon (5 sides)?

• 360°

• 90°

• 180°

• 540°

What is the SUM of the interior angles in a nonagon (9 sides)?

• 1440°

• 900°

• 1080°

• 1260°