Flashcard-Angles

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If Angle D is 80°, what is the measure of Angle C if they are supplementary?

Back

Angle C is 100°.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

If Angle X is 45°, what is the measure of Angle Y if they are vertical angles?

Back

Angle Y is 45°.

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

If Angle A is 30°, what is the measure of Angle B if they are complementary?

Back

Angle B is 60°.

Front

If Angle E is 48° and Angle F is (5x - 2) degrees, what is the value of x if they are vertical angles?

Back

x = 8.

Front

What is the sum of the measures of two supplementary angles?

Back

The sum is 180 degrees.

Front

What is the sum of the measures of two complementary angles?

Back

The sum is 90 degrees.

Front

If two angles are complementary and one angle measures 70°, what is the measure of the other angle?

Back

The other angle measures 20°.