Parallel Lines and Transversals (copy)

These flashcards cover key vocabulary related to parallel lines and transversals, including definitions of lines and types of angles formed by their intersection.

Parallel Lines

Two lines that go on in both directions but will never intersect.

Transversal

A line that intersects another line or set of lines.

Corresponding Angles

Angles in the same relative position; angles that are in the same 'corners'.

Vertical Angles

Opposite angles formed from intersecting lines.

Alternate Interior Angles

Angles on the inside of the parallel lines, and on opposite sides of the transversal.

Alternate Exterior Angles

Angles on the outside of the parallel lines, and on opposite sides of the transversal.

Same Side Interior Angles

Angles on the inside of the parallel lines, and on the same side of the transversal.

Same Side Exterior Angles

Angles on the outside of the parallel lines, and on the same side of the transversal.

Linear Pair

A pair of adjacent angles that are supplementary, meaning they add up to 180 degrees.

Congruent

Having the same size and shape, often referring to angles or segments that are equal in measure.

Supplementary

Two angles that add up to 180 degrees.

Corresponding

Vertical

Alternate Interior

Alternate Exterior

Same Side Interior

Same Side Exterior