Ceva, Giovanni, Geometria motus, 1692
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              rarum, ſint puncta in ijſdem figuris ſimiliter poſita, ponun­
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              tur verò imagines ſimiliter ſuſpenſæ, ergo ſequitur ipſas
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              longitudines eſſe vt latera homologa dictarum imaginum,
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              ſcilicet vt tempus AC ad tempus FG, vel vt extremæ ve­
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              locitates BC ad KE. </s>
              <s id="s.000675">Quamobrem imagines ipſæ, cum ſint
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              in duplicata ratione laterum homologorum, ſi huic dupli­
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              catæ addatur alia ratio ſimilis rationi longitudinum, fiet
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              ratio imaginum velocitatum, ſeu ſpatiorum acceleratorum
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              motuum ex ſimplicibus illis deriuantium triplicata tempo­
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              rum, vel extremarum velocitatum ſimplicium motuum. </s>
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              Tab.
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              7.
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              Fig.
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              3.</s>
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              PROP. XXV. THEOR. XX.
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              <s id="s.000678">SI verò ſimplices motus extiterint ſimiles,
                <expan abbr="æqualibuſq;">æqualibuſque</expan>
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              temporibus abſoluantur, imagines acceleratorum
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              motuum erunt in ſola ratione amplitudinum imaginum
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              ſimplicium. </s>
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              Tab.
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              7.
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              fig.
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              4.</s>
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              <s id="s.000680">Sint imagines ſimilium, ac ſimplicium motuum BAC,
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              KFG, quarum grauitatis centra D, H, erunt ex hypotheſi
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              tempora AC, FG æqualia; & ideo ſpatia, ſcilicet imagines
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              velocitatum BAC, KFG habebunt eandem rationem,
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              quam ſummæ, aut extremæ motuum ſimplicium velocita­
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              tes, ſcilicet, quam amplitudines imaginum, ſeu geneſum:
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              ſunt verò diſtantiæ DE, HI pariter æquales, quia AC, FG
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              æquales ſunt; ergo cum ſpatia acceleratorum motuum ne­
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              ctantur ex imaginibus ſimplicium motuum ABC, KFG, &
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              ex diſtantijs DE ad HI, liquet ipſa ſpatia eſſe in vnica, ſo­
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              laque ratione amplitudinum BC, KG, aut amplitudinum
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              geneſum. </s>
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              8
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              primi huius
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              2
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              primi huius
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              23.
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              huius.
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              PROP. XXVI. THEOR. XX.
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            <p type="main">
              <s id="s.000685">AT ſi ſimplicium, ſimiliumque motuum fuerint imagi­
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              nes æquè amplæ, imagines acceleratorum motuum, </s>
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