Angle Pairs!

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always equal.

Front

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

Back

60 degrees.

Front

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

Back

60 degrees.

Front

What is the relationship of two angles that add up to 180 degrees?

Back

They are supplementary.

Front

What is the relationship of two angles that add up to 90 degrees?

Back

They are complementary.

Front

If two angles are vertical, what can we say about their measures?

Back

They are equal.

Front

If angle C is 45 degrees, what is the measure of its complementary angle?

Back

45 degrees.

Front

If angle D is 75 degrees, what is the measure of its supplementary angle?

Back

105 degrees.