On Euclidean space, the A4 size paper as well as other Silver Rectangle with aspect ratio √ 1: √ 2 , can be wrapped into 2^N and 2(2N+1) ^ 2 congruent tetrahedrons for each face. The rectangular area equals to its wrapped surface area of all tetrahedron. In other words, the rectangle can be bent ...
From Knowledge to Wisdom Journal of Mathematics and System Science, USA ISSN 2159-5291 (Print); ISSN 2159-5305 (Online) Dear Haisheng Liang. This is Journal of Mathematics and System Science (ISSN 2159-5291, USA). We are ...