Naming Angles Formed by Transversal

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 alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that lie outside the two lines and on opposite sides of the transversal. They are equal when the lines are parallel.

Front

What are supplementary angles?

Back

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

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on two different lines cut by a transversal. They are equal when the lines are parallel.

Front

What is a transversal?

Back

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

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 is the relationship between alternate interior angles when the lines are parallel?

Back

When two parallel lines are cut by a transversal, alternate interior angles are equal.

Front

What are interior angles?

Back

Interior angles are angles that lie between two lines cut by a transversal.

Front

What is the sum of the interior angles of a triangle?

Back

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

Front

What are linear pairs?

Back

Linear pairs are two adjacent angles that form a straight line. They are supplementary.