Parallel Lines, Transversals and Triangles

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 crosses at least two other lines in the same plane.

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 same side interior angles?

Back

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

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

If two angles are supplementary, what is their sum?

Back

180 degrees.

Front

If angle A is 40 degrees, what is the measure of its supplementary angle?

Back

140 degrees.

Front

If angle B is 120 degrees, what is the measure of its vertical angle?

Back

120 degrees.

Front

If angle P measures 60 degrees, what is the measure of angle C if they are alternate interior angles?

Back

60 degrees.