Philosophiae naturalis principia mathematica . latera duo oppofita fe mutuoinftar diagonalium decuffant. Sed & e punftis quatuor ^, P, C, T),poffunt unum vel duo abire ad infinitum , eoque pafto latera fi-gurae quae ad punda illa convergunt, evadere parallela : quo iiicafu Sedio Conica tranfibit per caetera punfta , & in plagas pa-rallelarum abibit in infinitum. L E M M A punBum P, a quofi reBce quatuor P Q, P R, PS, PT, ad altas toudem pojitione datas reBas A B, ^f CD, AC , B D, finguU adftngulas m datts anguhs ducantur, reBangtilum [uh duahus ductts^ PQ_^XPR, ftt ad rectangtdum f

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Philosophiae naturalis principia mathematica . latera duo oppofita fe mutuoinftar diagonalium decuffant. Sed & e punftis quatuor ^, P, C, T),poffunt unum vel duo abire ad infinitum , eoque pafto latera fi-gurae quae ad punda illa convergunt, evadere parallela : quo iiicafu Sedio Conica tranfibit per caetera punfta , & in plagas pa-rallelarum abibit in infinitum. L E M M A punBum P, a quofi reBce quatuor P Q, P R, PS, PT, ad altas toudem pojitione datas reBas A B, ^f CD, AC , B D, finguU adftngulas m datts anguhs ducantur, reBangtilum [uh duahus ductts^ PQ_^XPR, ftt ad rectangtdum fuh altts duahus P S X P T tn data ratione. Lineas ^5, C©, ad quas reftas duse T^, TR, unum reclan-gulorum continenres ducunrur, coiweniant cum aliis duabus v oii-tipne datis lineis in punftis A, B y C, -T). Ab eorum ajiquo A agereftam quamlibet AH^ in qua velis punftum T reperiri. Secet ealineas oppoiitas BT), CT>, nimirum P© in //, & CD in /, &. c?bdatos omnes angulos figurae, dabuntur rationes-!P ^ ad T A ^ T A 1- 3 ad;.

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