Triangle Sum Theorem

Front

A triangle can have two right angles.

Back

False

Front

Find the measure of the missing angle if the other two angles are 64° and 58°.

Back

58°

Front

Angles that are exactly 90 degrees are called _____ ______.

Back

Right angles

Front

Find the measure of the angle if the other two angles are 139° and 116°.

Back

66°

Front

Name the smallest angle in this triangle if ∠A = 40°, ∠B = 30°, ∠C = 50°.

Back

∠B

Front

What is the sum of the angles in a triangle?

Back

180°

Front

If one angle of a triangle is 90°, what type of triangle is it?

Back

Right triangle

Front

What do you call an angle less than 90 degrees?

Back

Acute angle

Front

What do you call an angle greater than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

If two angles in a triangle are 70° and 50°, what is the measure of the third angle?

Back

60°