With the help of dividers or steel-pointed drawing compasses, the four right angles were bisected and re-bisected, using the construction which Euclid gives.
Ngoncedo lomahlulo ngentsimbi eyalatha ukuzoba ikhampasi ezine kwidolo-nxande ethi yahlulwa nokuthi yahlulwe yakusetyenziswa ekwakhiweni kweEuclid ukunikela.