Geometric Figures, Types of Lines, and Angles

Front

What is a Ray?

Back

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

Front

What is a Line Segment?

Back

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

Front

What is a Line?

Back

A line is a straight path that extends infinitely in both directions.

Front

What are Parallel Lines?

Back

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

Front

What are Perpendicular Lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

What is an Acute Angle?

Back

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

Front

What is a Right Angle?

Back

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

Front

What is a Straight Angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

How do you identify a Ray in a figure?

Back

A ray starts at a point and goes off in a particular direction without ending.

Front

How do you identify a Line Segment in a figure?

Back

A line segment is shown as a straight line with two endpoints.