Angles and Parallel Lines

Front

What is a linear pair of angles?

Back

Two angles that are adjacent and form a straight line.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the relationship between interior angles on the same side of the transversal when the lines are parallel?

Back

They are supplementary.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What is true about vertical angles?

Back

They are always congruent.

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 are on opposite sides of the transversal and inside the two lines.

Front

What is the relationship between alternate interior angles when the lines are parallel?

Back

They are congruent.

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines in relation to a transversal.

Front

What is the relationship between corresponding angles when the lines are parallel?

Back

They are congruent.