Parallel lines cut by 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

What are corresponding angles?

Back

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

Front

What are alternate interior angles?

Back

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

Front

What are alternate exterior angles?

Back

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

Front

What are consecutive interior angles?

Back

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

Front

If angle 6 is 25 degrees, what is angle 7?

Back

155 degrees (because they are supplementary).

Front

If angle 1 = 27°, what is angle 4?

Back

27° (because they are corresponding angles).

Front

Which angles are congruent?

Back

Angles that have the same measure.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent.