Finding Unknown Angles in Triangles

If all three angles are exactly the same measure, how big is each angle?
Hint:    x + x + x  = 180

• 180 degrees
• 90 degrees
• 50 degrees
• 60 degrees

Find the measure of the angle indicated. 

• 139°
• 66°
• 138°
• 116°

Angles that are exactly 90 degrees are called _____ ______.

• tight angles
• acute angles
• obtuse angles
• right angles

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

Find the missing angle. 

• 151
• 147
• 118
• 62

What is the measure of angle b?

• 36^o
• 56^o
• 63^o
• 117^o

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

• 80
• 100
• 60
• 90