parallel lines cut by a transversal

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet and are always the same distance apart.

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 relative to the two lines cut by a transversal.

Front

What are same-side interior angles?

Back

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

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

How do you identify corresponding angles when given a transversal?

Back

To identify corresponding angles, look for angles that are in the same relative position at each intersection of the transversal with the two lines.

Front

What is the relationship between same-side interior angles?

Back

Same-side interior angles are supplementary, meaning they add up to 180 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are congruent, meaning they have the same measure.

Front

How can you determine if two lines are parallel using angles?

Back

If a transversal intersects two lines and the same-side interior angles are supplementary, then the lines are parallel.

Front

What is the sum of the angles formed by a transversal intersecting two parallel lines?

Back

The sum of the angles formed by a transversal intersecting two parallel lines is 360 degrees.