Parallel Lines & Transversals

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

Identify the corresponding angle to angle 4.

Back

Angle 8 is the corresponding angle to angle 4.

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

Identify the alternate interior angles in the following scenario: ∠4 and ∠5.

Back

∠4 and ∠5 are alternate interior angles.

Front

What is the relationship between two lines if their slopes are equal?

Back

If two lines have equal slopes, they are parallel.

Front

If two lines are perpendicular, what is the relationship between their slopes?

Back

The slopes of two perpendicular lines are negative reciprocals of each other.

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 degrees.

Front

What is the measure of angle C if ∠C=116°?

Back

Angle C measures 116 degrees.