Notam OA=x, AB=y si BC=z
OM=x+y+z/2
ON=x+(x+z)/2
OP=x+y/2
OM+ON+OP=x+x+z/2+x+x/2+y/2+x+y/2=3x+2y+z
OA+OB+OC=x+x+y+x+y+z=3x+2y+z
Deci raportul este egal cu 1
