Properties of Parallel Lines

Front

What is the angle relationship when two interior angles are on the same side of the transversal?

Back

Same Side Interior Angles

Front

What do you call two lines that run in the same direction and will never meet?

Back

Parallel Lines

Front

What is the angle relationship when two angles are in corresponding positions when a transversal crosses two lines?

Back

Corresponding Angles

Front

Which angles are formed on opposite sides of the transversal and inside the two lines?

Back

Alternate Interior Angles

Front

Which angles are formed on opposite sides of the transversal and outside the two lines?

Back

Alternate Exterior Angles

Front

What is the relationship between two angles that are formed by two intersecting lines and are opposite each other?

Back

Vertical Angles

Front

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

Back

They are equal.

Front

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

Back

They are equal.

Front

If two lines are parallel, what can be said about the same side interior angles?

Back

They are supplementary.

Front

In a diagram, if ∠1 and ∠4 are vertical angles, what can be said about their measures?

Back

They are equal.