Parallel Lines and Transversals (with Algebra)

Front

What are parallel lines?

Back

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

Front

What is a transversal?

Back

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

Front

Define alternate interior angles.

Back

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

Front

Define alternate exterior angles.

Back

Angles that are on opposite sides of the transversal and outside the two lines.

Front

What are corresponding angles?

Back

Angles that are in the same position on two different lines cut by a transversal.

Front

If two parallel lines are cut by a transversal, what can be said about the alternate interior angles?

Back

They are congruent.

Front

If two parallel lines are cut by a transversal, what can be said about the corresponding angles?

Back

They are congruent.

Front

If two parallel lines are cut by a transversal, what can be said about the same-side interior angles?

Back

They are supplementary.

Front

Solve for x: 2x + 4 = 16.

Back

x = 6.

Front

Solve for x: 3x - 9 = 0.

Back

x = 3.