Parallel Lines

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 the relationship between vertical angles?

Back

Vertical angles are equal to each other.

Front

If two parallel lines are cut by a transversal, what is the relationship of the corresponding angles?

Back

Corresponding angles are equal.

Front

What are alternate interior angles?

Back

Alternate interior angles are angles that lie between two parallel lines on opposite sides of a transversal and are equal.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

How do you find the measure of an angle when given its vertical angle?

Back

Vertical angles are equal, so the measure of the angle is the same as its vertical angle.

Front

What is the relationship between same-side interior angles when two parallel lines are cut by a transversal?

Back

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

Front

What is a transversal?

Back

A transversal is a line that intersects two or more lines at different points.

Front

If angle 1 is 27 degrees, what is the measure of angle 4 if they are vertical angles?

Back

Angle 4 is also 27 degrees because vertical angles are equal.

Front

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

Back

Corresponding angles are equal when two parallel lines are cut by a transversal.