Oſtenſum eſt enim BD ſexdecim eſſe, & BT quatuor, & FE
itidem quatuor exiſtere. Ex demonſtratione autem Archime
dis decimæ nonæ ptopoſitionis de quadratura paraboles cla
rè elicitur BD quadruplam eſſe ipſius BT.
90[Figure 90]
itidem quatuor exiſtere. Ex demonſtratione autem Archime
dis decimæ nonæ ptopoſitionis de quadratura paraboles cla
rè elicitur BD quadruplam eſſe ipſius BT.
Præterea oſtendendum eſt triangulum AFB triangulo BLC
ęquale eſſe, portionem què paraboles AFB portiom BLC ęqua
lem. Ampliùs triangulum AIF triangulo CML, & portio
nem AIF portioni CML æqualem eſſe, & reliqua triangula
reliquis triangulis, acportiones portionibus ęquales eſſe.
ęquale eſſe, portionem què paraboles AFB portiom BLC ęqua
lem. Ampliùs triangulum AIF triangulo CML, & portio
nem AIF portioni CML æqualem eſſe, & reliqua triangula
reliquis triangulis, acportiones portionibus ęquales eſſe.