Angle Basics Identification with Naming

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

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always congruent (equal in measure).

Front

What is the sum of supplementary angles?

Back

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

Front

What is the sum of complementary angles?

Back

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

Front

How can you identify adjacent angles in a diagram?

Back

Adjacent angles can be identified by looking for two angles that share a common vertex and a common side.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal in measure, meaning they are congruent.

Front

If angle 1 is 70 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle would be 110 degrees, since 180 - 70 = 110.

Front

If angle 2 is 30 degrees, what is the measure of its complementary angle?

Back

The complementary angle would be 60 degrees, since 90 - 30 = 60.

Front

What is the definition of a linear pair of angles?

Back

A linear pair of angles consists of two adjacent angles that are formed when two lines intersect, and their measures add up to 180 degrees.

Front

How do you find vertical angles in a diagram?

Back

Vertical angles can be found by identifying the angles that are opposite each other at the intersection of two lines.