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# Title: Leibniz-Handschriften zur Mathematik LH 35, 4, 13
# Folio 22v, page id 00068010:0044
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Orimariae propositiones Elemen
orum
utat Cartesius has solum propositiones
este
ad calculum necessarias: pythagoricam
se aequalitate quadrati hypotenusae cum
quadratis baseos et catheti; alteram
e
Siangulis similibus latera proportionatia
habentibus. ed ex his onabus possterior
e
Continetur in priore. Ego has propositiones
puto tenendas: trianguli tres angulos
s
duobus rectis aequales. maniuci
aream esse factum dimidium ex altitudine
in basit; et Miangula simelia lavere
datere propoitionalia. Ex his duci possunt
usiliter tamen notabuntur haec. quadrata
cathesi et baseos aequan quadrato hypotenus a
et u circulo angulum ad circumferentiam est e duplu
anguli ad centrum. Udite etiam notare in circulo
rectangula sub segmentis decussantibus sese est e
aequalia. item langentem circuli esse perpendicularem
radium e puncta contactu odnctum item
angulu
in ejusdem ciculi setmento est e eundem e