Parallel lines and Transversal

Front

What are parallel lines?

Back

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

Front

What is a transversal?

Back

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

Front

What are vertical angles?

Back

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

Front

What are alternate exterior angles?

Back

Angles that lie outside the two lines and on opposite sides of the transversal; they are equal when the lines are parallel.

Front

What are alternate interior angles?

Back

Angles that lie between the two lines and on opposite sides of the transversal; they are equal when the lines are parallel.

Front

What are same side interior angles?

Back

Angles that lie between the two lines and on the same side of the transversal; they are supplementary when the lines are parallel.

Front

How do you find the measure of an angle formed by a transversal?

Back

Use the properties of the angles formed (e.g., vertical angles, alternate interior angles) to set up equations.

Front

What is the relationship between corresponding angles when two lines are parallel?

Back

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

Front

What is the sum of the interior angles on the same side of the transversal?

Back

They are supplementary, meaning their measures add up to 180 degrees.

Front

What is the significance of angle pairs in parallel lines and transversals?

Back

They help determine the relationships between angles and can be used to solve for unknown angle measures.