Vertical, Adjacent, Complementary and Supplementary Angles

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 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 adjacent angles?

Back

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

Front

If one angle is 40 degrees, what is its complementary angle?

Back

50 degrees.

Front

If one angle is 110 degrees, what is its supplementary angle?

Back

70 degrees.

Front

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

Back

They are equal.

Front

If angle A is 30 degrees, what is the measure of angle B if they are complementary?

Back

Angle B is 60 degrees.

Front

If angle C is 120 degrees, what is the measure of angle D if they are supplementary?

Back

Angle D is 60 degrees.

Front

What is the relationship between adjacent angles in a linear pair?

Back

They are supplementary.