Peter Ip

A platonic solid is a convex polyhedron with identical regular polygonal faces. Only 5 of them exist

Eigenvectors of a 2x2 matrix are vectors on a 2D plane whose direction will not change after a linea

A spirograph is a tool that produces geometric curves by rotating a circle inside or outside a fixed

Challenge yourself to a speedy solution Hint option available to guide you step by step whenever you

Watching starlings (a kind of small bird) fly in formation can be mesmerizing. Thanks to a research

Partout means everywhere in French and tonight, it is really bats partout. Evil bats coming from a r

Follow the classic rules described in "https://en.wikipedia.org/wiki/Mastermind_(board_game)". Dupli