Parallel Lines Cut by a 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 Alternate Interior Angles?

Back

Angles that lie between two lines and on opposite sides of a transversal.

Front

What are Alternate Exterior Angles?

Back

Angles that lie outside two lines and on opposite sides of a transversal.

Front

What are Corresponding Angles?

Back

Angles that are in the same position on two different lines cut by a transversal.

Front

What are Vertical Angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What are Supplementary Angles?

Back

Two angles that add up to 180°.

Front

If m∠1 = 125°, what is m∠6 if they are Alternate Exterior Angles?

Back

m∠6 = 125°.

Front

If m∠1 = 125° and m∠6 = 5x, find x.

Back

x = 25.

Front

If m∠C = 180° - m∠D and m∠D = 64°, find m∠C.

Back

m∠C = 116°.