Parallel lines cut by a transversal

Front

What is the angle relationship formed by two parallel lines cut by a transversal that are on opposite sides of the transversal and inside the parallel lines?

Back

Alternate Interior Angles

Front

What is the angle relationship formed by two parallel lines cut by a transversal that are on opposite sides of the transversal and outside the parallel lines?

Back

Alternate Exterior Angles

Front

What is the angle relationship formed by two parallel lines cut by a transversal that are on the same side of the transversal and inside the parallel lines?

Back

Same Side Interior Angles

Front

What is the angle relationship formed by two lines intersecting at a point?

Back

Vertical Angles

Front

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

Back

parallel

Front

What is the angle relationship formed by two parallel lines cut by a transversal that are on the same side of the transversal and outside the parallel lines?

Back

Same Side Exterior Angles

Front

If two lines are parallel and a transversal cuts them, what can be said about the corresponding angles?

Back

They are congruent.

Front

If two lines are cut by a transversal and the alternate interior angles are congruent, what can be concluded about the two lines?

Back

The lines are parallel.

Front

What is the sum of the measures of same side interior angles when two parallel lines are cut by a transversal?

Back

180 degrees.

Front

If angle A and angle B are corresponding angles formed by a transversal cutting two parallel lines, what is true about their measures?

Back

They are equal.