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 ...

Like Thayer's enormous triangle, the Big Idea underlying Equilateral the novel isn't illuminated until nearly its completion. It's a pretty neat trick for a novelist to pull off, to obscure the ...

Discover the different types of triangles and find out the difference between an equilateral, scalene, isosceles and right-angled triangle in this KS2 guide.

Henry Dudeney, a self-taught English mathematician and puzzle columnist, asked his readers to dissect an equilateral triangle into the smallest number of pieces that could be rearranged into a square.

Lamé's formulas for the eigenvalues and eigenfunctions of the Laplacian with Dirichlet boundary conditions on an equilateral triangle are derived using direct elementary mathematical techniques. They ...

Thalhammer was fond of L'Enfant's use of stars and triangles in his plan for the city – and found herself particularly drawn to the equilateral triangles that took shape in his designs. "I ...

This large, nearly equilateral triangle is composed of three of the brightest stars in the sky, each belonging to its own constellation. The brightest is the bluish-white star Sirius (magnitude -1 ...