vertex v1 -2 0 0
vertex v2 9 0 0
vertex v3 1 1 0
polyvertex w v2 v1 v3 v2
mkplane s w
fixshape  r  s  -maxtaila 10  -maxtailw 1

checknbshapes  r  -vertex 2  -edge 2  -wire 1  -face 1  -shell 0  -solid 0  -compsolid 0  -compound 0
checkprops r -l 6.1622776601683791