Table of Contents
Introduction to 3 Dimensional Shapes
A 3-dimensional shape is a geometric figure that has height, width, and depth. Some common 3-dimensional shapes are cubes, pyramids, and cones.
Height is the distance from the bottom of a shape to the top. Width is the distance from one side of a shape to the other. Depth is the distance from the front of a shape to the back.
3 Dimensional Shapes
There are three types of dimensions: length, width, and height. In the physical world, objects have these dimensions. Length is how long an object is, width is how wide it is, and height is how tall it is.
3D shapes are shapes that have three dimensions. These shapes have length, width, and height. Some examples of 3D shapes are cubes, spheres, and pyramids.
1. Pyramid:
A pyramid is a triangular shaped structure with a pointed top. It is built from large stones and has a square or rectangular base. The sides of a pyramid are smooth and sloping.
Pyramids were built as tombs for pharaohs and their consorts in ancient Egypt. The largest and most famous pyramid is the Great Pyramid of Giza.
2. Prism:
A prism is a transparent solid with flat sides and a triangular cross-section. A prism is a polyhedron with two identical congruent bases, called bases. The other six faces are triangular and are all the same size.
3. Polygon:
A polygon is a closed figure with straight sides.
4. Point:
A point is a location in space with no dimensions.
5. Line:
A line is a straight, infinite path extending in two directions.
6. Plane:
A plane is a flat surface that extends infinitely in all directions.
7. Surface:
A surface is the boundary of a three-dimensional object.
Platonic Solids or Polyhedrons
A polyhedron is a three-dimensional object with flat faces and straight edges. There are only five regular polyhedrons, which are also known as the Platonic solids. A pyramid is a polyhedron with a triangular base and triangular sides. The vertex, or point, is the apex of the pyramid.
