LIBER SEPTIMVS: . $8 JPROPOSITIO XL $i fint due quelibet inclinationes radiorum ab eodem medio ra ro ad idem medium den[um vel contra , fuperficies autem. me- - diorum communis (re plana, progre[fus lucis in primo medio , ad progre[fum lucis frmul fa&lum. in fecundo babebis eandem ratío- mem, in… … Intduz qualibet inclinationes radiorum À C, & 4c,in angulis | diuerfis, A C B &acb,ad planum c£, C B, à pun&is autem 5D, ' ducantur f, B F,rectz radiis «c, A C, parallela, fumptifque in / f, BF, rectis d, BD, iifdemradiis;4c, A C; equalibus ,' compleantur parallelogramma a£ c4, A B. C D. Sitque…
Mathematics, Greek · Conic sections · Physics -- Early works to 1800
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
