Chapter 7 Vocab Terms

Front

Vertical Angle: Angles opposite each other when two lines cross.

Back

Angles opposite each other when two lines cross.

Front

Congruent Angle:

Back

Angles with the same measure.

Front

Complementary Angle:

Back

Two angles that add up to 90°

Front

What is a Ray?

Back

A line with a start point but no end point (goes to infinity)

Front

Supplementary Angles

Back

Two angles that add up to 180°

Front

Line Segment: The part of a line connecting two points.

Back

The part of a line connecting two points.

Front

Perpendicular Line:

Back

Two lines that meet at a 90° angle.

Front

Parallel Lines:

Back

Two lines that are always the same distance apart and never touching.

Front

Transversal:

Back

A line that passes through two lines in the same plane at two distinct points.

Front

Alternative Exterior Angles:

Back

A pair of angles on the outer side of two lines, opposite sides of the transversal.