Complementary, Supplementary, Vertical, Adjacent Angles

Front

What are complementary angles?

Back

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

Front

What are supplementary angles?

Back

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

Front

What are vertical angles?

Back

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

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 measures 30 degrees, what is the measure of its complementary angle?

Back

60 degrees (90 - 30 = 60).

Front

If angle B measures 120 degrees, what is the measure of its supplementary angle?

Back

60 degrees (180 - 120 = 60).

Front

If two angles are vertical angles and one measures 45 degrees, what is the measure of the other angle?

Back

45 degrees (vertical angles are equal).

Front

If angle C and angle D are adjacent angles and angle C measures 70 degrees, what is the measure of angle D if they are supplementary?

Back

110 degrees (180 - 70 = 110).

Front

What is the relationship between complementary angles?

Back

The sum of their measures is 90 degrees.

Front

What is the relationship between supplementary angles?

Back

The sum of their measures is 180 degrees.