Hello, this is Ryo.Have you ever looked at the explanation for a geometry problem and thought, "How on earth would anyone think to draw that line?"Many people believe that "only people with a natural ...

Equiangular lines are lines in space that pass through a single point, and whose pairwise angles are all equal. Picture in 2D the three diagonals of a regular hexagon, and in 3D, the six lines ...