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# Title: Optica Promota, Seu Abdita radiorum reflexorum & refractorum Mysteria, Geometrice Enucleata (shelfmark Leibn. Marg. 94)
# Folio 38, page id 727094130:0050
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10. Eu) 15.
soeculum; CM, adGlS BM A, aequalis anoulo AM C: ee
LML A, aequalis angulo A M P; igiie B M A S C M. A simul,
nimiru. n B ML C, aequalis erit angulo A ML P, ec angulO AM 
limul, id est angulo P ML Q: quod demolteare OPOFLVIE.
Cotema.
Si duoradii, in eodem c  a entem, concurrant in ver-
rant in alteralentis vet ex illa egredientes: angulus comprehen-
 anobno pot post eeressum.
TNEC
aequalis erit anoulo comprehense
dii extra lencem . L De i Cocu camen plano
cam illius axe, lencene m cll L cranseunces, retracti in
L. N, _ L. M5 Cincq; aa alii, inera rencem prioribus in cransicu
Parallel nC
mpC CPAL. N, X HC ipEEL M; omnibustiisce
sustvor radiis in ino refractionis superficie exiltencibuss incidancqs
AL, B L In unam lerc vercicem L.
ex alia lentis vertice C, IN CF, CF.
redianCuE VerOHIC, GC.
Dicoangulum AL. B, esse
aequalem angulo LC F.
Ducacur enim lencis PH
NOL, anis I L. C. IE, DeF
quem. (quoniam omnes
hi radii sunc in eodem pla-
nocum esse ex suppolcio.
AC) ducatur communis Tu-
perticies refractionis, PM
CNQHLO, plonum
nempe, ex cujus revolurio.
negenita eAtlens; eruncas
ML. C, L. C. Hlanouliineio
denriae radiorum parallelo.
PUM ML, HC, (CupPO.
mendo nimirum NL re-
Cringi in L B5 nam (BL
cetringarur in L M, e C
CORVETEC
2
7.
tice lentis, eam transeunces; duo vero alii, in eodem plano cum prio
ribus, intra lentem prioribus etiam in eransitu paralleli, concur-
sus a duobus primis ante inere Pun