Monte, Guidobaldo del In duos Archimedis aequeponderantium libros paraphrasis 1588
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ducatur 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