Parallel Lines & Transversals Flashcard Review

Front

What is a transversal?

Back

A line that passes through two or more lines in the same plane.

Front

What are Vertical Angles?

Back

Angles that are opposite each other when two lines intersect. They are equal in measure.

Front

What is the measure of ∠3 if it is 45 degrees?

Back

∠3 = 45 degrees.

Front

What is the measure of ∠2 if it is 142 degrees?

Back

∠2 = 142 degrees.

Front

What is the relationship between Alternate Interior Angles?

Back

They are equal when two parallel lines are cut by a transversal.

Front

What is the measure of corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal.

Front

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

Back

The angles formed will have specific relationships: alternate interior angles are equal, corresponding angles are equal, and same-side interior angles are supplementary.

Front

What is the sum of the measures of angles on a straight line?

Back

180 degrees.

Front

What is the measure of Alternate Exterior Angles when two parallel lines are cut by a transversal?

Back

They are equal.

Front

If ∠1 = 38 degrees, what is the measure of its corresponding angle?

Back

∠1's corresponding angle is also 38 degrees.