  This paper presents distributions of topological observables in inclusive
three- and four-jet events produced in pp collisions at a centre-of-mass energy
of 7 TeV with a data sample collected by the CMS experiment corresponding to a
luminosity of 5.1 inverse femtobarns. The distributions are corrected for
detector effects, and compared with several event generators based on two- and
multi-parton matrix elements at leading order. Among the considered
calculations, MADGRAPH interfaced with PYTHIA6 displays the best overall
agreement with data.
