== External links ==*History of the Isoperimetric Problem at Convergence* Treiberg: Several proofs of the isoperimetric inequality* Isoperimetric Theorem at cut-the-knot
== Внешние ссылки ==*History of the Isoperimetric Problem at Convergence* Treiberg: Several proofs of the isoperimetric inequality* Isoperimetric Theorem at cut-the-knot