This document provides an introduction to basic geometry concepts including points, lines, and planes. It defines a point as an exact location, a line as extending indefinitely in both directions, and a plane as a flat surface that extends indefinitely in all directions. Examples are given to illustrate each concept, such as a ball being a point on a line or an island surrounded by water indefinitely being a plane. The document also introduces naming conventions for points, lines, and planes and describes intersections between these concepts, such as two lines intersecting at a single point.