Angle Relationships Review

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

What is the relationship between complementary angles?

Back

Complementary angles are two angles whose sum is 90 degrees.

Front

What is the relationship between supplementary angles?

Back

Supplementary angles are two angles whose sum is 180 degrees.

Front

What are adjacent angles?

Back

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

Front

If angle a is 70 degrees, what is the measure of its complementary angle?

Back

The complementary angle is 20 degrees (90 - 70 = 20).

Front

If angle b is 110 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle is 70 degrees (180 - 110 = 70).

Front

What is the measure of angle a if it is vertical to angle b, which is 45 degrees?

Back

Angle a is also 45 degrees.

Front

If two angles are supplementary and one angle measures 65 degrees, what is the measure of the other angle?

Back

The other angle measures 115 degrees (180 - 65 = 115).

Front

What is the sum of the measures of complementary angles?

Back

The sum is 90 degrees.

Front

What is the sum of the measures of supplementary angles?

Back

The sum is 180 degrees.