Lines and Angles

Front

What is a ray?

Back

A ray has one endpoint and continues forever in one direction.

Front

What is a point?

Back

A point is a single dot that shows location.

Front

What are intersecting lines?

Back

Intersecting lines are lines that cross each other.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that is greater than 90 degrees.

Front

What is a line segment?

Back

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

Front

What are parallel lines?

Back

Parallel lines are lines that never meet and are always the same distance apart.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an acute angle?

Back

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

Front

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

Back

A line goes on forever in both directions, while a line segment has two endpoints.

Front

What do we call two lines that meet at a point?

Back

Two lines that meet at a point are called intersecting lines.