Parallel Lines and Transversal

Front

What are parallel lines?

Back

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

Tags

CCSS.HSG.CO.A.1

Front

What is a transversal?

Back

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

Tags

CCSS.8.G.A.5

Front

Define corresponding angles.

Back

Angles that are in the same position at each intersection where a transversal crosses two lines.

Tags

CCSS.8.G.A.5

Front

What are alternate interior angles?

Back

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

Tags

CCSS.8.G.A.5

Front

Define same-side interior angles.

Back

Angles that are on the same side of the transversal and inside the two lines.

Tags

CCSS.8.G.A.5

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines cross. They are always equal.

Tags

CCSS.7.G.B.5

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal.

Tags

CCSS.8.G.A.5

Front

What is the relationship between alternate interior angles when two parallel lines are cut by a transversal?

Back

Alternate interior angles are equal.

Tags

CCSS.8.G.A.5

Front

What is the relationship between same-side interior angles when two parallel lines are cut by a transversal?

Back

Same-side interior angles are supplementary (add up to 180 degrees).

Tags

CCSS.8.G.A.5

Front

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

Back

The angles formed will have specific relationships: corresponding angles are equal, alternate interior angles are equal, and same-side interior angles are supplementary.

Tags

CCSS.8.G.A.5