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# Title: [Lectiones XVIII, Cantabrigiae in Scholis publicis habitae] Lectiones XVIII, Cantabrigiæ in Scholis publicis habitæ (shelfmarks Leibn. Marg. 0; ZEN Leibn. Marg. 0)
# Folio 71, page id 797435492:0119
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l E C F. Z.
_ demirratur N Q ad A C perpendicularis; erie C9 =F= B
NaM. (UE supra) est C A. CR:: F. F. quare dividendo erit C A
CR. CR:: F - - F. F. Item hic erit A N9- AC9 =
2ACXCO .+ C Ng. adeoque 2 AC XC O + C Ng. CN9
:: A C. CR. HOC eAt, (ob CN 9 = 2 A C. X E,) 2AC.X C.
n= 2AC XF. 2 A C XF:: AC. CR: hoc est C 9. 1 F: F:.
AC. C. R. quare diridendo C.. F:: AC -- C R. CR. ergo
F = F = C : D. E. D.
IX. POrrO; Si duorum quorumris radiorum AH, A R relleri.
NR, R L axem Sccen punciis R, L; erit CR. CL:: AR9 -
AC 9. A:N g -- AC9. Nam ob CR. AC:: CN g. AI 9
AC9. e AC. Cb:: AA9 - AC9. CN9. erir exxquo
perturbate CK. C L:: AR 9 - AC g. AN 9 - AC 9:
X. Hlinc Si radius AR sic ipIo A N obliquior; erir C R ~C. lui
Nam AR9 - AC9. 1AN9: AC9.
XI. Eine palam est. reAexOS. NR, RL. Pese prius quim axem
decussare.
ZII. Accipiantur porro bini pares arcus NIR, RZ. Sc inciden.
tiur AN, A R, A X retlexi cum axe conveniane punctis R, L, M,
dico spatium LM, obliquiorum occursibus incerjectum, majus esse
spario I.K, quod rectiorum concinetur occursibus. Nam e supra
monstraris constat esse AN q + A R g 7 2 A Rg. proindéque (0- Fig: 102.
re ANg. + AX9 - 2 AC9 T. 2 AR9 - 2 ACg. ac inde
AN9. = A C 9 AR9- AC9~ A R9 - ACg. AX9.
AC 9. hoc est: C L. CR ICM. C L. vel C.M. CLB CLa
CNin Quare C. M - t CRL 2C L. _ ided L ME-RL:
ZUII. Hinc rectius ingruens lux a retlectione vensus arem conden
Patior evadic.
Al. ulum denutrucias ex lulo luteldullau Msbs. si ilales
circa reslerorum metam Z, oculo ulpiam in RL consiruro, apP2
rere
ousxiam in Z. B collocao contuliorem appmrentiam objici quipre
111
Gum.
 arcaram Laneta ta quolenette depeetm. dei.