Centered tetrahedra: centered_tetrahedron

### 14.17.1 Centered tetrahedra: centered_tetrahedron

The centered_tetrahedron command creates a regular tetrahedron.

- centered_tetrahedron command takes three arguments:
  A,B,C, three points.
- centered_tetrahedron(A,B,C) returns and draws the tetrahedron centered at A, with a vertex at B and another vertex on the plane ABC.

#### Example.

Input:

centered_tetrahedron([0,0,0],[0,0,6],[0,1,0])

Output: