Unit 3 Vocab Review

Front

Corresponding angles:

Back

Two angles in the same position when parallel lines are cut by a transversal.

Front

Perpendicular lines

Back

Intersect to form a 90° angle

Front

Parallel lines:

Back

Lines in the same plane that do not intersect.

Front

Transversal: A line that intersects two or more lines.

Back

A line that intersects two or more lines

Front

Alternate interior angles:

Back

A pair of angles on the inside of two lines cut by a transversal, but on opposite sides of the transversal.

Front

Alternate exterior angles:

Back

A pair of angles on the outer side of two lines cut by a transversal, but on opposite sides of the transversal.

Front

Vertical angles are:

Back

Congruent angles opposite each other when two lines intersect.

Front

Supplementary angles?

Back

Two angles whose sum is 180°.

Front

If lines are parallel, alternate interior angles are _____________

Back

congruent

Front

For alternate exterior angles to be congruent, the lines must be _____________

Back

parallel