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# Title: Leibniz-Handschriften zur Mathematik LH 35, 11, 1
# Folio 12v, page id 00068174:0024
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theor 1. projectio rectae per
oculum transemilis est punctum
quo tebulam secat
18. 2. projecta recta est recta
te C tempe intersectio plani
perrectam et oculum cum labula
L5. coroll. hino Duorum
punctorum projectio ne data habetu
projectio rectae indefinitae
per ipse. Habebatur autem
si habebitur tum ubi recta tabut
secet, m quod est unum punctum
tum ubi pecta per oculum
hanc rectam secat, nam rectae
er oculum projectio est alterum
punctum.
coroll. 2. Hin
projectio convergentium est
convergens, et concurrsus appar
eut abparentia objectivi.
cocatet th. 4. pprallelarm
petroire
ad Tabulam conuasus sunt parali
in tabula (quia parallelo
ipsis per oculum occurrus tabulae
in puncto infinite distante) th.
omnium aliarum paralletarum
oli one
concursis, sunt convergentes, et
a
concursus caum in tabula est
punctum ubi una earum qua
per oculum ducitur Tabulae dant
(sequitur ex 1h. +. (nam haberi
possunt pro concurrentibus in puncto
infinite distante. Ergo no punctien
communis projectio cincidit in projectione
ei unius ex ipsis scilicet quae peroculum
ducitur. sed ejus rectae projectio ipsa
est punctum quod diximus) coroll.
itaque projectiones perpendicataum
ad tabulum concurrunt in puncto
principali Tabulae, quod scllicet
minimum ab oculo distat.
th. G. projectiones linearum aut
superficierum sese tangentium secan
se eliam tangunt
secant)
e