Parallel Lines cut by a Transversal Relationships

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 are on opposite sides of the transversal and inside the two lines.

Front

What are alternate exterior angles?

Back

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

Front

What are consecutive interior angles?

Back

Consecutive interior angles are pairs of angles that are on the same side of the transversal and inside the two lines.

Front

If m∡3 = (2x-135)° and m∡7 = (x-30)°, how do you find m∡3?

Back

Set the equations equal to each other and solve for x, then substitute x back to find m∡3.

Front

If m∡1 = 118°, what is m∡5?

Back

m∡5 is equal to m∡1 because they are corresponding angles.

Front

If m∡7 = 60°, what is m∡2?

Back

m∡2 is equal to m∡7 because they are corresponding angles.

Front

If m∡3 = 81°, what is m∡6?

Back

m∡6 is equal to m∡3 because they are corresponding angles.