SCCS Parallel Lines and Transversals

Front

What are parallel lines?

Back

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

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 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 vertical angles?

Back

Vertical angles are the angles opposite each other when two lines cross. They are always equal.

Front

If m∠1 = 43°, what is m∠2 if ∠1 and ∠2 are corresponding angles?

Back

m∠2 = 43° (Corresponding angles are equal).

Front

If m∠3 = 37°, what is m∠4 if ∠3 and ∠4 are alternate interior angles?

Back

m∠4 = 37° (Alternate interior angles are equal).

Front

If m∠5 = 55°, what is m∠6 if ∠5 and ∠6 are vertical angles?

Back

m∠6 = 55° (Vertical angles are equal).

Front

If m∠7 = 125°, what is m∠8 if ∠7 and ∠8 are corresponding angles?

Back

m∠8 = 125° (Corresponding angles are equal).