Geometry Vocabulary

Front

What is a supplementary angle?

Back

Two angles that add up to 180 degrees.

Front

What is a complementary angle?

Back

Two angles that add up to 90 degrees.

Front

Define vertical angles.

Back

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

Front

What is a transversal line?

Back

A line that intersects two or more other lines.

Front

What are alternate interior angles?

Back

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

Front

What are corresponding angles?

Back

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

Front

What are same side interior angles?

Back

Angles that are on the same side of the transversal and inside the two lines.

Front

What is the sum of the measures of supplementary angles?

Back

180 degrees.

Front

What is the sum of the measures of complementary angles?

Back

90 degrees.

Front

If two angles are vertical angles, what can be said about their measures?

Back

They are equal.