The pyramid shape embodies spirituality ... In astrology, a grand trine in a natal chart is represented by an equilateral triangle. The symbol for the planet Neptune also uses the triangle ...

A tetrahedron is a triangular pyramid with all equilateral triangle faces. A pyramid with a square base is a square-based pyramid. Image caption, 3D shapes that are non-polyhedral include ...

The polyhedron in the left upper corner, hanging from a string, is called a rhombicuboctahedron: a polyhedron with an equilateral ... surface—that is, a pyramid with a triangular or quadrangular ...

The Purvis Primary student decorated hundreds of tiny equilateral triangles and then arranged them to form a larger equilateral triangle, known as a Sierpinski pyramid.