Point, line, plane, and angle are basic geometric shapes and concepts. A point is a location in space, a line connects two points, a plane extends infinitely in two dimensions, and an angle is the union of two rays with a common endpoint. Other concepts like parallel lines, triangles, rectangles, and circles are built from these basic elements. Geometry describes the relationships between various shapes and measurements in real world objects and structures.

1. Geometry in the Real World Jesse Wright Period 1, Geometry