Test your knowledge of taxicab geometry, triangular numbers, the golden ratio and more.

PROLOGUE: The Mirror and the Mind I have spent a lifetime studying reflection, yet I find myself now reflecting upon a ...

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 ...

A third shape hidden in the infamous Vitruvian Man drawing suggests an even deeper understanding of human anatomy than ...