Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet or intersect, no matter how far they are extended.

Front

What is a transversal?

Back

A transversal is a line that crosses at least two other lines in the same plane.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in similar positions at each intersection where a transversal crosses two lines.

Front

What are alternate interior angles?

Back

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

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that lie outside two lines and on opposite sides of a transversal.

Front

What are consecutive interior angles?

Back

Consecutive interior angles are pairs of angles that lie between two lines on the same side of a transversal.

Front

If m∡6 = 71°, what is m∡3?

Back

m∡3 = 71° (corresponding angles are equal when lines are parallel).

Front

If m∡2 = 32°, what is m∡3?

Back

m∡3 = 32° (corresponding angles are equal when lines are parallel).

Front

If m∡1 = 118°, what is m∡5?

Back

m∡5 = 118° (corresponding angles are equal when lines are parallel).

Front

If m∡3 = (2x+10)° and m∡6 = (3x-15)°, how do you find x?

Back

Set (2x+10)° equal to (3x-15)° and solve for x.