Exploration based on dividing polyhedra into cubes into equal parts

鳖臑（biē nào）is a solid geometry name created by ancient mathematicians, derived from" Nine Chapters on Arithmetic: Shang Gong ". It refers to a tetrahedron whose faces are all right angled triangles. In the Nine Chapters on the Mathematical Art, the turtle shell is obtained by obliquely solving a cube, which is a special form of a triangular pyramid. Turtles still have their applications in modern mathematics, especially in solid geometry. Due to their inherent excellent properties, they are known as the "little prince" of solid geometry and repeatedly appear in various problems.

彩蛋