Points Line Segments Lines Rays Angles

Front

What is a point?

Back

A point is a specific location in space that has no size or dimension.

Front

What is a line?

Back

A line is a straight path that extends infinitely in both directions with no endpoints.

Front

What is a line segment?

Back

A line segment is part of a line that has two endpoints.

Front

What is a ray?

Back

A ray is part of a line that has one endpoint and extends infinitely in one direction.

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint.

Front

How many degrees are in a right angle?

Back

A right angle measures 90 degrees.

Front

What is a straight angle?

Back

A straight angle measures 180 degrees and looks like a straight line.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

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

Front

What is the difference between a line and a line segment?

Back

A line extends infinitely in both directions, while a line segment has two endpoints.