Unit 1: Geometry Tools

Front

Point

Back

indicates place or position; has no length, width or thickness; represented by a dot

Front

Line

Back

infinite set of points that extend in two opposite directions without end

Front

Plane

Back

a flat surface that extends forever in all directions

Front

Line Segment

Back

a portion of a line consisting of two endpoints and all the points between them

Front

Endpoint

Back

A point at one end of a segment or the starting point of a ray.

Front

Ray

Back

A part of a line that starts at an endpoint and extends infinitely in one direction.

Front

Postulate

Back

A statement that is accepted as true without proof.

Front

Intersection

Back

The set of points that two or more geometric figures have in common.

Front

Collinear

Back

Points that lie on the same line.

Front

Coplanar

Back

Points that lie on the same plane.