YOU SAID:

The largest strictly-convex polyhedron whose faces are only equilateral triangles is the icosahedron.

INTO JAPANESE

面が正三角形のみである完全に凸の最大の多面体は、正二十面体です。

BACK INTO ENGLISH

The largest perfectly convex polyhedron whose faces are only equilateral triangles is the icosahedron.

INTO JAPANESE

面が正三角形のみである完全に凸な最大の多面体は、正二十面体です。

BACK INTO ENGLISH

The largest perfectly convex polyhedron whose faces are only equilateral triangles is the icosahedron.