The document defines basic geometric shapes including points, lines, planes, angles, polygons, circles, spheres, cylinders, cones, cubes and their properties. It explains that a point has no size, a line extends forever with no thickness, a plane is a flat surface that extends forever with no thickness, an angle is formed by two rays with a common endpoint, and perpendicular and parallel lines intersect or lie on the same plane without intersecting. It also defines triangles, right triangles, pentagons, hexagons, squares, rectangles, trapezoids, parallelograms, circles, cylinders, spheres, quadrilaterals, cones and cubes.

1. Geometry in the Real World By: Ashlan Wiley Block 5