G-4.3 FLASHCARD 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 intersects two or more lines at different points.

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

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.

Front

What are same-side interior angles?

Back

Same-side interior angles are pairs of angles that lie between two lines and on the same side of a transversal.

Front

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

Back

Corresponding angles are congruent (equal in measure).

Front

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

Back

Alternate interior angles are congruent (equal in measure).

Front

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

Back

Same-side interior angles are supplementary (their measures add up to 180 degrees).

Front

Solve for x: 2x + 10 = 50

Back

x = 20

Front

What is the measure of ∠6 if it is a corresponding angle to ∠2 which measures 45 degrees?

Back

∠6 = 45 degrees.