Geometry Questions and Answers
Definition of Geometry
In its simplest form, geometry is the mathematical study of shapes and space. Geometry can deal with flat, two-dimensional shapes, such as squares and circles, or three-dimensional shapes with depth, such as cubes and spheres.
ConceptBefore diving into two-dimensional and three-dimensional shapes, consider the basic geometric objects that create these shapes: points, lines, line segments, rays, and planes.
- A point is represented by a dot and shows a location in space.
- A line is a set of straight points that extends forever in both directions as depicted by arrows on both ends.
- Rays are lines that end on one side. Line segments end on both sides. Planes are surfaces that extend forever in all directions.
- Two-dimensional objects only have two dimensions: length and width.
- Unlike two-dimensional objects, three-dimensional objects have a third dimension, depth, and are, therefore, not flat. Cubes, spheres, and pyramids are examples of three-dimensional objects. A cube is an object made of six square sides.