is_rhombus — Commands reference

Docs : Commands : is_rhombus

is_rhombus(Pnt or Cplx,Pnt or Cplx,Pnt or Cplx,Pnt or Cplx)

Returns 1 or 2 if the 4 points (or the object) build a rhombus (2 for a square) and 0 otherwise.