HW5-Unit 3 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.

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 angles that are in the same position at each intersection where a transversal crosses two lines.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles on opposite sides of a transversal but inside the two lines.

Front

What are consecutive interior angles?

Back

Consecutive interior angles are pairs of angles on the same side of the transversal and inside the two lines.

Front

What is the relationship between parallel lines and corresponding angles?

Back

If two parallel lines are cut by a transversal, then each pair of corresponding angles is equal.

Front

What is the relationship between parallel lines and alternate interior angles?

Back

If two parallel lines are cut by a transversal, then each pair of alternate interior angles is equal.

Front

What is the relationship between parallel lines and consecutive interior angles?

Back

If two parallel lines are cut by a transversal, then each pair of consecutive interior angles is supplementary (adds up to 180 degrees).

Front

How can you prove that two lines are parallel using angles?

Back

If a transversal intersects two lines and the corresponding angles are equal, then the lines are parallel.

Front

What is the angle sum property of a triangle?

Back

The angle sum property states that the sum of the interior angles of a triangle is always 180 degrees.