Parallel Lines & 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.

Tags

CCSS.HSG.CO.A.1

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.

Tags

CCSS.8.G.A.5

Front

What is the Alternate Interior Angles Theorem?

Back

If two parallel lines are cut by a transversal, then each pair of alternate interior angles is congruent.

Tags

CCSS.8.G.A.5

Front

What is the Converse of the Alternate Interior Angles Theorem?

Back

If two lines are cut by a transversal and the alternate interior angles are congruent, then the lines are parallel.

Tags

CCSS.8.G.A.5

Front

What are alternate interior angles?

Back

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

Tags

CCSS.8.G.A.5

Front

What is the Same-Side Interior Angles Theorem?

Back

If two parallel lines are cut by a transversal, then each pair of same-side interior angles is supplementary.

Tags

CCSS.8.G.A.5

Front

What is the Converse of the Same-Side Interior Angles Theorem?

Back

If two lines are cut by a transversal and the same-side interior angles are supplementary, then the lines are parallel.

Tags

CCSS.8.G.A.5

Front

What are exterior angles?

Back

Exterior angles are angles that lie outside the two lines cut by a transversal.

Tags

CCSS.8.G.A.5

Front

What is the Corresponding Angles Postulate?

Back

If two parallel lines are cut by a transversal, then each pair of corresponding angles is congruent.

Tags

CCSS.8.G.A.5