The subject is an equilateral-triangular-pyramid; and the characteristics (even; which it exist within our dimension): The most equidistant points: "4"; identically shaped around; and i forgot what came up on my walk, but mathematically (this is it):... in our dimension; existingly (as I don't know what a built-Tetrahedron may be!
Thanks!
You may also call me, Inasha!
Nolx