Basic Geometry Definitions

Front

What is the term for a flat surface that extends infinitely in all directions?

Back

Plane

Front

A collection of points that only extends in one direction.

Back

Ray

Front

What do you call two lines in the same plane that never intersect?

Back

Parallel

Front

A location in space that is represented by a dot and has no dimensions.

Back

Point

Front

A ___________ is part of a line that begins with a point, then extends forever in one direction.

Back

Ray

Front

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

Back

Line

Front

What do you call the distance around a circle?

Back

Circumference

Front

What is the term for an angle that measures less than 90 degrees?

Back

Acute Angle

Front

What do you call a triangle with all sides of different lengths?

Back

Scalene Triangle

Front

What is the term for a polygon with four sides?

Back

Quadrilateral