13.6.11  The isobarycenter of n points in the plane: isobarycenter

See Section 14.4.7 for isobarycenters of objects in space.

The isobarycenter command finds the isobarycenter of a list of points; the isobarycenter is the barycenter when all points are equally weighted.

• isobarycenter takes one argument:
  L, a list of points. (The points can also be given by a sequence).
• isobarycenter(L) draws and returns the isobarycenter of the points.