Geometric Figures Review

Front

What is a line in geometry?

Back

A straight one-dimensional figure that has no thickness and extends infinitely in both directions.

Front

What is an angle?

Back

A figure formed by two rays, called the sides of the angle, sharing a common endpoint called the vertex.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is a plane in geometry?

Back

A flat two-dimensional surface that extends infinitely in all directions.

Front

What is a ray?

Back

A part of a line that starts at a point and extends infinitely in one direction.

Front

What is a line segment?

Back

A part of a line that is bounded by two distinct endpoints.

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

An angle that measures more than 90 degrees but less than 180 degrees.

Front

How many rays form an angle?

Back

Two rays.