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# Title: Leibniz-Handschriften zur Mathematik LH 35, 15, 6
# Folio 39r, page id 00068208:0079
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Haec si ad curvam Rhombicam veram in
seu coxodrimiam
superficie sptrae rae descriptam applicemus, potent
ea intelligi describi si meridianque aliquis circa
axem suum i circumvolvatur, atque interim
In ipso meridiana punctum aliquod moveatur
ad se invicem
ea relatione duorum motuum
inde apolo,  puncto mobilifectis motu puncti contest
ut arcus arcubusmenidiani, existeritibus ut
numens parcus aequatoris a meridiano percusi
dimensio
semper
percursi sint ut logarithui
autem curve R Jombi ce eodem modo facillima
si et sit P potus, AG. aequator pA quadrars meaddi
quadrans meridiani, ut et ip N quivis cum verum maneat
angulos PotIN PIN2N, erc. esse semper eosdem, seu troangula
et. semper similia + et od.N, ad 2N
habebi
haberi posse pro rectis, verum etiam erit aggregatua omnum
ONiN iNIN eu esse pe seu arcus curvae, esse acu angregens
omnium Nd, seu oN od, 1Nad, etc. proportionales seu ipsosa
yN fore propoitiona arcus YN, arcus meridiani inter N
line
puncta num rhombicae seter pro et et ae quatorem Aa
s
quatorem interceptos, fore ipsis A.
a
et partibus
toib inter punctum rhombicae fixum quo aequatorem
combicae 
se cat A, et
mento punctum rhombicae proposita p
proportionales.
 Unde unico rhombicae
accu dato, alios ejusdem Thombicae arcus metirilicet
rhombicaa (interceptis,
quin imo data dimensione, unius phombicae datur
ogum adeton descriptae
odum directionis.
totum sit  polus, duaque htbica ex eodem sphaelae puncto A egressa, et inter duos
al
pe rig.
sunt
naplllelos A  et V. 2N interceptae nempe AN, et A(N,
sit ADm portio meridiani inserduos illos parallelos patet ex dictis
uarca
corparcum A2 N ad rect rhombicae A2N ad arcum rhombilae A(V), ut tanu
ecans directiancarioris anguli diuctionis quem semper facit
lprior rhombica ad me vel navis tam percurrens ad meridhanam)
thombicae privis, ad secantem directionis, rhomtitae posterions. Haec
omana dimensio coxodtomiae jam alis fuit nota
Estenim
ad AV, seu ON
ut A.N ad 40D
seu ut secant onis
anguli dixe
ii
fig.
ad meridia
an
siunm