Kulolu shicilelo, sizocubungula ukuthi iyini irediyasi echazwe futhi ebhalwe emfanekisweni. Ulwazi luhambisana nemidwebo ukuze kuqondwe kangcono.
Okuqukethwe
Ukuthola irediyasi
Umbuthano osokiwe
Ububanzi (R) indilinga esokiwe mayelana ne-ellipse ilingana nobude be-eksisi yayo ephakathi nendawo enkulu (a),
Umbuthano obhaliwe
Ububanzi (r) indilinga ebhalwe ku-ellipse ilingana nobude be-semiaxis yayo encane (b),