Vertical, Adjacent, & Corresponding Angles

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 are corresponding angles?

Back

Corresponding angles are the angles that are in the same position at each intersection when a transversal crosses two parallel lines. They are equal in measure.

Front

What are supplementary angles?

Back

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

Front

How can you identify vertical angles in a diagram?

Back

Vertical angles are formed by two intersecting lines and are located opposite each other.

Front

What is the relationship between angles 1 and 5 when two parallel lines are cut by a transversal?

Back

Angles 1 and 5 are corresponding angles and are equal in measure.

Front

What is the sum of the measures of supplementary angles?

Back

The sum of the measures of supplementary angles is 180 degrees.

Front

If angle 7 is 70 degrees, what is the measure of angle 8 if they are supplementary?

Back

Angle 8 would measure 110 degrees, since 70 + 110 = 180.

Front

What is the definition of a transversal?

Back

A transversal is a line that intersects two or more lines at different points.

Front

How do you find the measure of an unknown angle when given supplementary angles?

Back

Subtract the known angle from 180 degrees to find the measure of the unknown angle.

Front

What are the properties of vertical angles?

Back

Vertical angles are always equal and are formed by the intersection of two lines.