Parallel Lines Cut by a Transversal - Day 1

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 supplementary angles.

Back

Two angles whose measures add up to 180 degrees.

Front

What are corresponding angles?

Back

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

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of the transversal and inside 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

What are alternate exterior angles?

Back

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

Front

What is an obtuse angle?

Back

An angle whose measure is greater than 90 degrees and less than 180 degrees.

Front

What is an acute angle?

Back

An angle whose measure is less than 90 degrees.

Front

What is a right angle?

Back

An angle whose measure is exactly 90 degrees.