<classify> Omunye umGreki odumile usozibalo uPythagoras, owaziwa kakhulu ngomqondo wakhe oqinisekiswa ngokuchasiselwa odumile omayelana nokuhlangana phakathi kwezinhlangothi zonxantathu abanezinhlangothi ezimbili eziqondene ngqo.  <topic>: sciencetechnology 