Angle Pairs

Front

What is a Linear Pair of Angles?

Back

A Linear Pair of Angles consists of two adjacent angles whose non-common sides form a straight line. They are supplementary, meaning their measures add up to 180 degrees.

Front

What are Complementary Angles?

Back

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

Front

What are Adjacent Angles?

Back

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

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 a Corresponding Angle?

Back

Corresponding Angles are pairs of angles that are in similar positions at each intersection where a straight line crosses two others. They are equal when the lines are parallel.

Front

If two angles are complementary and one angle measures 25 degrees, what is the measure of the other angle?

Back

The other angle measures 65 degrees (90 - 25 = 65).

Front

If two angles form a linear pair and one angle measures 75 degrees, what is the measure of the other angle?

Back

The other angle measures 105 degrees (180 - 75 = 105).

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal when two parallel lines are cut by a transversal.

Front

What is the sum of the measures of two complementary angles?

Back

The sum of the measures of two complementary angles is 90 degrees.

Front

What is the sum of the measures of two angles that form a linear pair?

Back

The sum of the measures of two angles that form a linear pair is 180 degrees.