I-5.6 Ellipses
Ukukhuluma ngokuqinile, i-ellipse iyinombolo enezindawo ze-2 ezibizwa nge-foci. Isamba sebanga kusuka kunoma yiliphi iphuzu le-ellipse kuya kwenye ye-foci, kanye nebanga ukusuka kulowo mbono kuya kwelinye ukugxila, lizohlala lilingana nesamba esifanayo nenye enye iphuzu ellipse. Lena incazelo yayo yakudala. Nokho, ukwakha i-ellipse nge-Autocad, akudingekile ukunquma i-foci. I-geometry ye-ellipse ingabuye ibe ne-axis encane kanye ne-axis enkulu. Empambana eksisi ezinkulu eksisi encane okungenani AutoCAD, maphakathi lesiyingi, ngakho indlela ukudweba ellipses ngobuciko etshengisa isikhungo ke ibanga kuya ekupheleni omunye imiphini bese ibanga ukusuka enkabeni kuze kube sekugcineni kwesinye i-axis. Okuhlukile kwalolu hlelo ukudweba iphuzu lokuqala nelinye lokuphela kwe-axis eyodwa bese ibanga linye.
Ngakolunye uhlangothi, i-arlip elliptical yizingxenye ze-ellipse ezingakhiwa ngendlela efanayo ne-ellipse, kuphela ukuthi ekugcineni kufanele sibonise inani lokuqala nelokugcina le-angle yama-arcs. Khumbula ukuthi ngokumiswa okuzenzakalelayo kwe-Autocad, inani le-0 ye-angle ye-ellipse lihambisana ne-axis enkulu futhi landa ngokwedlula isikhathi, njengoba kubonakala ngezansi: