Parallel lines cut by a transversal

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 exterior angles.

Back

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

Front

Define same side exterior angles.

Back

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

Front

What is the relationship between alternate exterior angles when lines are parallel?

Back

They are equal.

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines in relation to a transversal.

Front

What is the relationship between corresponding angles when lines are parallel?

Back

They are equal.

Front

Define vertical angles.

Back

Angles that are opposite each other when two lines intersect.

Front

What is the relationship between vertical angles?

Back

They are equal.

Front

What are complementary angles?

Back

Angles that add up to 90°.