DelMonte, Guidubaldo, In duos Archimedis aequeponderantium libros Paraphrasis : scholijs illustrata

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1ducatur EF, eritvti 〈que〉 punctum F vertex portionis AFB.
vt Archimedes demonſtrauit in libro de quadratura parabo­
les propoſitione decimaoctaua.
iungantur〈que〉 AF FB. rur
fus bifariam diuidantur AF FB in punctis GH, à quibus
ipſi BD ducantur æquidiſtantes GI HK b eandem cau­
ſam erit punctum I vertex portionis AIF. K verò portio­
nis FKB. connectanturquè AI IF FK KB. eademquè pror
fus ratione ad alteram partem inſcribantur triangula CLB

CML, & LNB. Primùm quidem triangulum ABC dicitur
planè inſcriptum, vt Archimedes ipſe infra in demonſtratio­
nibus quintæ, ſextæ, & octauæ propoſitionis nominat.
Dein
de figura AFBLC, figuraquè AIFKBNLMC dicuntur in
portione planè inſcriptæ.
figuraquè AFBLC vna cum AC
pentagonum in portione planè inſcriptum dici pont. vt Archime
des in ſecunda parte demonſtrationis quintæ propoſitionis
huius libri nuncupat.
ideòquè erit AIFKBNLMC nonago­
num in portione planè inſcriptum.
& ita in alijs. Connectam

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