Parallel lines

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart.

Tags

CCSS.HSG.CO.A.1

Front

What is the Vertical Angles Theorem?

Back

The Vertical Angles Theorem states that when two lines intersect, the opposite (or vertical) angles are equal.

Tags

CCSS.HSG.CO.C.9

Front

What is the Alternate Interior Angles Theorem?

Back

The Alternate Interior Angles Theorem states that if two parallel lines are cut by a transversal, then each pair of alternate interior angles is equal.

Tags

CCSS.8.G.A.5

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that lie outside the two lines and on opposite sides of the transversal.

Tags

CCSS.8.G.A.5

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that lie between the two lines and on opposite sides of the transversal.

Tags

CCSS.8.G.A.5

Front

If angle A and angle B are alternate interior angles, what can be said about their measures if the lines are parallel?

Back

If the lines are parallel, then angle A is equal to angle B.

Tags

CCSS.8.G.A.5

Front

What is a transversal?

Back

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

Front

How do you identify corresponding angles?

Back

Corresponding angles are angles that are in the same position at each intersection where a transversal crosses two lines.

Tags

CCSS.8.G.A.5

Front

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

Back

When two parallel lines are cut by a transversal, corresponding angles are equal.

Tags

CCSS.8.G.A.5

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.

Tags

CCSS.8.G.A.5