A study says a triangle between the Vitruvian Man’s feet reveals a 1.64 ratio, also found in Bonwill’s jaw model and natural ...

Named for Plato, who theorized that the classical elements were made of these regular polyhedrons, three of the Platonic solids are composed of equilateral triangles: the tetrahedron, octahedron ...

Before we can build the piñata, we need to create an equilateral triangle template.

Trace around this template to make nine more equilateral triangles. Repeat with another 113cm line, but this time with 100cm of string to make an isosceles triangle -- you'll need 30 of them.