Parallel lines cut by a transversal

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet and are always the same distance apart.

Front

What is a transversal?

Back

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

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position at each intersection where a transversal crosses two lines.

Front

What are same-side interior angles?

Back

Same-side interior angles are pairs of angles that lie on the same side of the transversal and between the two lines.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that lie on opposite sides of the transversal and between the two lines.

Front

What is the relationship between same-side interior angles?

Back

Same-side interior angles are supplementary, meaning their measures add up to 180 degrees.

Front

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

Back

To find the measure of an angle that is supplementary to a given angle, subtract the measure of the given angle from 180 degrees.

Front

What is the equation used to solve for an unknown angle in a linear pair?

Back

The equation is typically set up as: angle1 + angle2 = 180 degrees.

Front

What is the sum of the measures of angles formed by a transversal cutting through two parallel lines?

Back

The sum of the measures of angles formed by a transversal cutting through two parallel lines is 360 degrees.

Front

What is the measure of 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.