Tetrahedron diagram

"You are a three-dimensional being, and your shadow is two - dimensional. This means that you are most likely the shadow of a four-dimensional being!"
Is it a new type of diagramm - not a triangle, but a Tetrahedron diagram

How can we plot it in Mathcad? See please the Mathcad 15 sheet in attach!

The edges of a tetrahedron are a function of one argument with a maximum, the sides of a tetrahedron are a function of two arguments with a maximum, and the interior of a tetrahedron is a function of three arguments with a maximum" Etc

Tetraeder diagram