Deg Tanzeggit tuglimt, Uzmig d uzlig i d-ikkan seg uzdiger n ukaswar K {\displaystyle K} usbiṭ ur d-izerri ara seg yixef n K {\displaystyle K} yerna ur t-ittnali ara (azdiger deg snat n tegnatin-a d agaz neɣ d amaɣad). Uzmigen ttwazrawen seg wakud amzikan (200 st) ass mi i d-igra Apolonio n Perga tazrawt i d-immalen aylanen-is Tanzeggit taklidant Asenmel aseldan Uzmig di tesledt tasnakant d adeg anzeggan i wagaz yettewliwlen, anda assaɣ gar n yiseggiwen-is ɣef wagaz usbiṭ d useggiw-is ɣef umaɣad usbiṭ d assaɣ usbiṭ. assaɣ-a yettusemma s wallunmas (Eccentricity), ma d agaz usbiṭ isem-is adik, ma d amaɣud ittusemma turwin (directrix). P S = e . P M {\displaystyle PS=e.PM} Anda: - P d agaz (x,y) tezga-d deg uglay. - S d adik - e d amuskir n wallunmas - ma d m d timbeddit taratakt n P ɣef turwin. Ma yella wallunmas yegda tigget, ad yettwasemmi s tkenzirart, ma yella ddaw n tigget ad yettwasemmi aglay, ma yella yugar tigget ad yettwasemmi tafeljumma. Dɣa takenzirart d uglay d tfeljumma isem-it-sent uzmigen acku zemren ad nnulfan s usrag n uzdiger n wegni ɣef kra n waddad. Tilmas n wuzmigen Llant 3 n telmas (Aglay, Takenzirart d tfeljumma). Ma d tawinest tezmert ad tettwimeggez d talmest tis 4 (akken iy ɣil Apolonio), neɣ yezmer ad yili fell-as umeggez d akken-itt d talmest seg uglay. Dɣa aglay d twinest ttwasilɣen-d mi ara ad yili uzdiger n ugniw yakk d ukawsar d amezlagu umdil. Ma d tawinest tettwasileɣ-d mi ara ad yili ugniw azdigran yemsideɣ i twinest n uzadur i d-isnulfan akaswar. Iẓalayen Deg Tanzeggit tuglimt, Uzmig d uzlig i d-ikkan seg uzdiger n ukaswar K {\displaystyle K} usbiṭ ur d-izerri ara seg yixef n K {\displaystyle K} yerna ur t-ittnali ara (azdiger deg snat n tegnatin-a d agaz neɣ d amaɣad). Uzmigen ttwazrawen seg wakud amzikan (200 st) ass mi i d-igra Apolonio n Perga tazrawt i d-immalen aylanen-is Tanzeggit taklidant Asenmel aseldan Uzmig di tesledt tasnakant d adeg anzeggan i wagaz yettewliwlen, anda assaɣ gar n yiseggiwen-is ɣef wagaz usbiṭ d useggiw-is ɣef umaɣad usbiṭ d assaɣ usbiṭ. assaɣ-a yettusemma s wallunmas (Eccentricity), ma d agaz usbiṭ isem-is adik, ma d amaɣud ittusemma turwin (directrix). P S = e . P M {\displaystyle PS=e.PM} Anda: - P d agaz (x,y) tezga-d deg uglay. - S d adik - e d amuskir n wallunmas - ma d m d timbeddit taratakt n P ɣef turwin. Ma yella wallunmas yegda tigget, ad yettwasemmi s tkenzirart, ma yella ddaw n tigget ad yettwasemmi aglay, ma yella yugar tigget ad yettwasemmi tafeljumma. Dɣa takenzirart d uglay d tfeljumma isem-it-sent uzmigen acku zemren ad nnulfan s usrag n uzdiger n wegni ɣef kra n waddad. Tilmas n wuzmigen Llant 3 n telmas (Aglay, Takenzirart d tfeljumma). Ma d tawinest tezmert ad tettwimeggez d talmest tis 4 (akken iy ɣil Apolonio), neɣ yezmer ad yili fell-as umeggez d akken-itt d talmest seg uglay. Dɣa aglay d twinest ttwasilɣen-d mi ara ad yili uzdiger n ugniw yakk d ukawsar d amezlagu umdil. Ma d tawinest tettwasileɣ-d mi ara ad yili ugniw azdigran yemsideɣ i twinest n uzadur i d-isnulfan akaswar. Iẓalayen Allunmas (awlilles) Ɣer daɣen: Allunmas Llant snat n turwin d sin n wadiken i tekenzirart d uglay. Ameccaq gar n wammas d turwin a / e {\displaystyle a/e} , ma a {\displaystyle a\ } iga d azengellus ameqran d umeẓyan n uglay, neɣ ameccaq gar n wammas ɣer yixef n tfeljumma. Ameccaq seg wammas ɣer wadik a e {\displaystyle ae\ } . Deg tegnit n twinest yettili umuskir n wallunmas e= 0. Imgucclen n wuzmig Imsidgen idikarten Isnasen Amezruy Imgucclen n wuzmig Imsidgen idikarten Isnasen Amezruy == Ẓeṛ daɣen ==