Basic Geometry Vocabulary

Front

Back

Front

Two lines intersect at a ....

Back

Two lines intersect at a point.

Front

What is it called when points lie on the same line?

Back

Points that lie on the same line are called Collinear.

Front

Points that lie in the same plane are called?

Back

Points that lie in the same plane are called Coplanear.

Front

What is the term for a straight path that extends infinitely in both directions?

Back

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

Front

What do you call a part of a line that has two endpoints?

Back

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

Front

What is the term for a point that divides a segment into two equal parts?

Back

A midpoint is a point that divides a segment into two equal parts.

Front

What do you call two lines that never intersect?

Back

Two lines that never intersect are called parallel lines.

Front

What is the term for the intersection of two lines?

Back

The intersection of two lines is called an angle.

Front

What do you call a flat surface that extends infinitely in all directions?

Back

A plane is a flat surface that extends infinitely in all directions.