Identifying Angle Relationships

Front

What are vertical angles?

Back

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

Front

Define alternate interior angles.

Back

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

Front

What are same-side interior angles?

Back

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

Front

What is a linear pair of angles?

Back

A linear pair of angles consists of two adjacent angles that form a straight line. They are supplementary.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that lie outside two parallel lines and on opposite sides of a transversal. They are equal.

Front

What is the sum of angles in a linear pair?

Back

The sum of angles in a linear pair is 180 degrees.

Front

How do you find the value of x in angle relationships?

Back

Set up an equation based on the angle relationships (e.g., vertical angles are equal, same-side interior angles are supplementary) and solve for x.

Front

What is the relationship between same-side exterior angles?

Back

Same-side exterior angles are supplementary, meaning their measures add up to 180 degrees.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on two parallel lines in relation to a transversal. They are equal.

Front

What is the relationship between alternate exterior angles?

Back

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