Solving Missing Angles of a Triangle

Find the measure of the missing angle.

• 47
• 57
• 53
• 133

Find the measure of the missing angle.

• 139°
• 66°
• 138°
• 116°

A triangle's angles add up to...

• 90 Degrees
• 180 Degrees
• 360 Degrees
• OVER 9000 Degrees

Work out the size of the missing angle

• 22

• 202

• 20

• 158

Find the measure of each angle indicated. 

• 139°
• 66°
• 138°
• 116°

What is the missing angle?

• 10
• 50
• 55
• 90

If 2 of the angles of a triangle are 30 and 70 degrees, the third angle measures...

• 80

• 100

• 60

• 90

Which of the following could be angle measures for a triangle?

A 120°, 50°, 20°

B 100°, 200°, 60°

C 30°, 50°, 80°

D 40°, 50°, 90°

• A

• B

• C

• D

Which Angle measurements create a Triangle?

• 60,60,61

• 90,45,45

• 100,50,50

• 90,90,80

Which Angle measurements does NOT create a Triangle?

• 60,60,60

• 90,45,45

• 50,60,40

• 50,100,30