Basic Geometry terms

Front

What are congruent segments?

Back

Segments that have the same length.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What is a ray?

Back

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

Front

What is the vertex of an angle?

Back

The common endpoint of the rays that form an angle.

Front

What are opposite rays?

Back

Two rays that have a common endpoint and extend in opposite directions.

Front

What is a line?

Back

A straight path that extends infinitely in both directions.

Front

What is a right angle?

Back

An angle that measures 90 degrees.

Front

What is a straight angle?

Back

An angle that measures 180 degrees.

Front

What is a bisector?

Back

A line or segment that divides another segment into two equal parts.

Front

What are parallel lines?

Back

Lines in a plane that never intersect and are always the same distance apart.