The Monty Hall problem is a probability puzzle, loosely based on the American television game show Let's Make a Deal and named after the show's original ... -->

An illegal prime is a prime number that represents information which is forbidden to possess or distribute. One of the first illegal primes was ... -->

In mathematics, the mice problem is a problem in which a number of mice (or bugs, dogs, missiles, etc.), starting from the ... -->

Apollonian circles are two families of circles such that every circle in the first family intersects every circle in the second family orthogonally, and ... -->

This is a quick method for finding the center of a circle. I used a program called Geogebra, but you ... -->

The world turns on symmetry -- from the spin of subatomic particles to the dizzying beauty of an arabesque. But ... -->

Euclid (/ˈjuːklɪd/ ewk-lid; Ancient Greek: Εὐκλείδης Eukleidēs), fl. 300 BC, also known as Euclid of Alexandria, was a Greek mathematician, often referred to as the "Father of Geometry". He ... -->

In mathematics and the arts, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to their maximum. The figure on ... -->