Basic Geometry Terms and Concepts

Front

point

Back

a location, no size or shape

Front

line

Back

two or more points on the same plane form this and it extends forever on both ends

Front

line segment

Back

part of a line

Front

plane

Back

a flat surface that extends forever on all sides

Front

collinear

Back

points that are on the same line

Front

noncollinear

Back

points that are in the same plane but not the same line

Front

coplanar

Back

points that are on the same plane

Front

noncoplanar

Back

points that are not on the same plane

Front

congruent

Back

same size, same shape

Front

congruent segments

Back

line segments with the same length