Now, more than 122 years after it was first proposed, Kamata and two other mathematicians have finally proved that a solution ...
A tetrahedron is a triangular pyramid with all equilateral triangle faces. A pyramid with a square base is a square-based pyramid. Image caption, 3D shapes that are non-polyhedral include ...
Mathematicians struggled to find the fewest number of pieces needed to cut an equilateral triangle and rearrange it into a ...