Triangle Sum Theorem

Front

Angles that are exactly 90 degrees are called _____ ______.

Back

right angles

Front

A triangle has one angle that measures 45° and one that measures 60°. What is the measure of the third angle?

Back

75°

Front

A triangle has one angle that measures 75° and one angle that measures 19°. What is the measure of the third angle?

Back

86°

Front

Will the following three angles for a triangle? 30°, 60°, 90°

Back

yes

Front

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

Back

180°

Front

What is the sum of the angles in any 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 a triangle with all angles less than 90°?

Back

Acute triangle

Front

What do you call a triangle with one angle greater than 90°?

Back

Obtuse triangle

Front

If two angles of a triangle are 50° and 60°, what is the measure of the third angle?

Back

70°