Parallel lines and transversals

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 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°.

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

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

Back

Alternate interior angles are congruent, meaning they are equal in measure.

Front

What is the sum of the angles formed when two parallel lines are cut by a transversal?

Back

The sum of the angles formed is 360°.

Front

How do you find the value of an angle when given its relationship to other angles?

Back

Use the properties of angle relationships (such as supplementary, complementary, or congruent) to set up equations and solve for the unknown angle.

Front

What is the angle relationship for same side exterior angles?

Back

Same side exterior angles are also supplementary.

Front

What is the value of x if one angle is 45° and it is a corresponding angle to another angle?

Back

x = 45° because corresponding angles are equal.

Front

What is the relationship between alternate exterior angles when two parallel lines are cut by a transversal?

Back

Alternate exterior angles are congruent.