Geometry

Front

What is a midpoint?

Back

The middle point of a line segment.

Front

What is a line?

Back

A straight, continuous, infinite collection of points.

Front

What is a protractor?

Back

A tool used to measure angles.

Front

What is a theorem?

Back

A statement that can be proven and used in later proofs.

Front

What is the congruent complements theorem?

Back

If two angles are complementary to the same angle, then those two angles are congruent.

Front

What is an angle?

Back

A figure formed by two rays with a common endpoint called the vertex.

Front

What are complementary angles?

Back

Two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles whose measures add up to 180 degrees.

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.