11D Angles formed by Parallel Lines and a Transversal

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet. They are always the same distance apart and have the same slope.

Front

What is a transversal?

Back

A transversal is a line that crosses at least two other lines in the same plane.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in similar positions at each intersection where a transversal crosses two lines.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of the transversal and inside the two lines.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that are on opposite sides of the transversal and outside the two lines.

Front

What are consecutive interior angles?

Back

Consecutive interior angles are pairs of angles that are on the same side of the transversal and inside the two lines.

Front

If two parallel lines are cut by a transversal, what is the relationship between corresponding angles?

Back

Corresponding angles are equal.

Front

If angle 6 is 25 degrees, what is angle 7 if the lines are parallel?

Back

Angle 7 is 155 degrees (supplementary to angle 6).

Front

If angle 1 = 27°, what is the measure of angle 4 if the lines are parallel?

Back

Angle 4 is also 27° (corresponding angles).

Front

What is the sum of the interior angles on the same side of a transversal?

Back

The sum of the interior angles on the same side of a transversal is 180°.