Low Poly Spheres: Tetrahedron

Low Poly Spheres: Low-poly, high-fun!

Low Poly Spheres is a series 3D printable models of polyhedra that look like low-poly spheres. You may remember from math class that polyhedra are solid 3D shapes with flat polygonal faces, straight edges, and sharp corners or vertices. Low Poly Spheres are fun to make and display. You can print them in different colors and sizes, and use them as decorations, toys, or educational tools. Low Poly Spheres are a fun way to enjoy 3D printing and mathematics. They are simple, yet beautiful and fascinating. 

Tetrahedron - Fun Facts

A tetrahedron is a 3D shape with four triangular faces, six edges, and four vertices. It is the simplest and smallest of the five Platonic solids, which are regular polyhedra with congruent faces and edges. A regular tetrahedron has equilateral triangles as its faces, and all its vertices are equally distant from each other. It is also self-dual, meaning that its dual shape is another tetrahedron. Some fun facts about tetrahedra:

• They can be used as 4-sided dice, since each face has an equal chance of landing on the bottom.
• They are the only Platonic solid that does not tessellate (fill space) by itself, but can do so with octahedra in a ratio of 2:1.
• They have 7 axes of symmetry, 4 passing through the vertices and 3 passing through the midpoints of the edges.
• They are the only Platonic solid with no parallel faces.