The study, published in the Journal of Mathematics and the Arts, reads: ‘For over 500 years, Leonardo da Vinci’s geometric system for establishing the precise relationship between the circle and ...

A pyramid is named by the shape of its ‘base’. A pyramid with a triangular base is a triangle-based pyramid. A tetrahedron is a triangular pyramid with all equilateral triangle faces.

Leonardo da Vinci, the famous Italian polymath who painted the Mona Lisa, had a sophisticated geometric understanding way ...

The states with the equilateral triangle shape also have a dual description in terms of particle-hole excitations in a mean-field picture.