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.

Tags

CCSS.HSG.CO.A.1

Front

What is a transversal?

Back

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

Tags

CCSS.8.G.A.5

Front

What are corresponding angles?

Back

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

Tags

CCSS.8.G.A.5

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of the transversal and inside the parallel lines.

Tags

CCSS.8.G.A.5

Front

What are alternate exterior angles?

Back

Angles that are on opposite sides of the transversal and outside the parallel lines.

Tags

CCSS.8.G.A.5

Front

What are vertical angles?

Back

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

Tags

CCSS.7.G.B.5

Front

What are supplementary angles?

Back

Two angles that add up to 180°.

Tags

CCSS.7.G.B.5

Front

If angle 6 is 25 degrees, what is angle 7 if they are supplementary?

Back

Angle 7 is 155 degrees.

Tags

CCSS.7.G.B.5

Front

If angle 3 is 70 degrees, what is the measure of its corresponding angle?

Back

The corresponding angle is also 70 degrees.

Tags

CCSS.8.G.A.5

Front

What is the sum of the interior angles of a triangle?

Back

The sum is always 180°.

Tags

CCSS.8.G.A.5