Angles Relationships & Missing Angle Measures

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

Back

Front

Back

x = -8.

Front

What is the relationship between complementary angles?

Back

The sum of complementary angles is 90 degrees.

Front

What is the relationship between supplementary angles?

Back

The sum of supplementary angles is 180 degrees.

Front

Back

Front

What is the measure of each angle in an equilateral triangle?

Back

Each angle measures 60 degrees.

Front

What is the measure of each angle in a right triangle?

Back

One angle measures 90 degrees, and the sum of the other two angles is 90 degrees.

Front

If two angles are vertical angles, what is true about their measures?

Back

Vertical angles are equal.

Front

If two angles are complementary and one angle measures 30 degrees, what is the measure of the other angle?

Back

The other angle measures 60 degrees.