A two-person romance is comforting, but there's something delicious about a love triangle, and these five books make for ...

According to mathematicians, the triangle is the most unstable shape when it comes to love (I assume). Whether it’s scalene, ...

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, and ...