parallel lines and transversal

Front

What are vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect. They are always congruent (equal measures).

Front

What is a transversal?

Back

A transversal is a line that intersects two or more other lines at different points.

Front

What do supplementary angles add up to?

Back

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. They are congruent when the lines are parallel.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that lie between two lines and on opposite sides of a transversal. They are congruent when the lines are parallel.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that lie outside two lines and on opposite sides of a transversal. They are congruent when the lines are parallel.

Front

What are consecutive interior angles?

Back

Consecutive interior angles are pairs of angles that lie between two lines on the same side of a transversal. They are supplementary when the lines are parallel.

Front

If two parallel lines are cut by a transversal, what can be said about the corresponding angles?

Back

The corresponding angles are congruent.

Front

If angle 1 is 70 degrees, what is the measure of angle 5 if angle 1 and angle 5 are corresponding angles?

Back

Angle 5 is also 70 degrees.

Front

If two angles are supplementary and one angle measures 120 degrees, what is the measure of the other angle?

Back

The other angle measures 60 degrees.