Parallel Lines Cut by Transversals

Front

What are vertical angles?

Back

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

Front

What are corresponding angles?

Back

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

Front

What are alternate interior angles?

Back

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

Front

What are alternate exterior angles?

Back

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

Front

What are consecutive interior angles?

Back

Consecutive interior angles are the angles that lie on the same side of the transversal and between the two parallel lines. They are supplementary.

Front

If angle 2 = 100 degrees, what is angle 7?

Back

Angle 7 = None (not defined by the given information).

Front

If angle 8 = 60 degrees, what is angle 5?

Back

Angle 5 = 60 degrees (corresponding angle).

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

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 consecutive angles formed by a transversal and parallel lines?

Back

Consecutive angles are supplementary, meaning they add up to 180 degrees.