Triangle Angle Relationships and Theorems

Front

Angles that are exactly 90 degrees are called _____ ______.

Back

right angles

Front

The sum of the angles in a triangle is always equal to _____ degrees.

Back

180 degrees

Front

If two angles are complementary, their measures add up to _____ degrees.

Back

90 degrees

Front

If two angles are supplementary, their measures add up to _____ degrees.

Back

180 degrees

Front

Vertical angles are formed by the intersection of two lines and are always _____ to each other.

Back

equal

Front

Adjacent angles share a common side and a common vertex but do not overlap. True or False?

Back

True

Front

In a right triangle, the side opposite the right angle is called the _____ side.

Back

hypotenuse

Front

In a triangle, if one angle measures 60 degrees and another measures 90 degrees, what is the measure of the third angle?

Back

30 degrees

Front

If two angles are equal, they are called _____ angles.

Back

congruent angles

Front

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two _____ angles.

Back

remote interior