Angle pairs

Front

What are complementary angles?

Back

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

Front

What is an angle bisector?

Back

An angle bisector is a line or ray that divides an angle into two equal parts.

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 supplementary angles?

Back

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

Front

What does it mean if two angles are neither complementary nor supplementary?

Back

If two angles are neither complementary nor supplementary, their measures do not add up to 90 degrees or 180 degrees.

Front

How do you determine if two angles are complementary?

Back

To determine if two angles are complementary, add their measures together. If the sum is 90 degrees, they are complementary.

Front

How do you determine if two angles are supplementary?

Back

To determine if two angles are supplementary, add their measures together. If the sum is 180 degrees, they are supplementary.

Front

What is the relationship between 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 the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

What is the definition of a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.