Pairs of Angles

Front

What are vertical angles?

Back

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

Front

Define adjacent angles.

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

What is the sum of supplementary angles?

Back

The sum of supplementary angles is 180 degrees.

Front

If two angles are complementary, what is their sum?

Back

The sum of complementary angles is 90 degrees.

Front

How do you find the measure of a missing angle when given supplementary angles?

Back

To find the measure of a missing angle, subtract the known angle from 180 degrees.

Front

What is the relationship between angles 2x and 10x if they are supplementary?

Back

If 2x and 10x are supplementary, then 2x + 10x = 180 degrees, which can be solved to find the values of x.

Front

What are complementary angles?

Back

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

Front

How can you identify vertical angles in a diagram?

Back

Vertical angles can be identified as the angles that are opposite each other at the intersection of two lines.

Front

What is the formula to calculate the measure of angles when given their relationship as supplementary?

Back

The formula is: angle1 + angle2 = 180 degrees.

Front

What is the measure of each angle if they are complementary and one angle is 30 degrees?

Back

If one angle is 30 degrees, the other angle is 60 degrees, since 30 + 60 = 90 degrees.