This chair is paying tribute to Swiss mathematician, Leonhard Euler, who discovered Euler‘s polyhedron theorem. The whole structure of Euler is composed of the extended lines and planes of triangle. It emphasizes the sharp angles and various angles formed by the seat surface. We can see its geometry or art of paper folding visually. The minimalist expression of it reflects its rigor in design. It is very comfortable based on ergonomics theories design, although its bevels seems a little tough. With simple shape, it is suitable for a variety of occasions .