Ceva, Giovanni, Geometria motus, 1692

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              Ex mechani­
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              cis,</s>
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              PROP. XXII. THEOR. XVII.
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              Tab.
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              7.
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              fig.
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              1.</s>
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              <s id="s.000651">IMagines velocitatum, ſeu ſpatia, quæ curruntur accele­
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              ratis motibus, ſunt vt ſolida ab imaginibus ſimplicium
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              motuum, ex quibus ipſi gignuntur accelerati. </s>
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              <s id="s.000652">Sint imagines ſimplicium motuum ABC, GLH, & ſoli­
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              da ab ipſis imaginibus (angulis ACQ, GHD ſemper re­
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              ctis, aut ſaltem æqualibus) intelligantur ABCRQ, GLHD.
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              Dico, vt ſunt interſe iſta ſolida, ſic eſſe homologè ſpatium
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              exactum tempore AC motu accelerato ex ſimplici motu
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              imaginis ABC ad ſpatium tranſactum tempore GH motu
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              item accelerato ex ſimplici imagine priori homogeneą
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              GLH: ſecetur ſolidum ABCRQ plano æquidiſtanti QCR, </s>
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              quod faciat in ſolido ipſo ſectionem TSVX: erit hæc figu­
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              ra prorſus ſimilis, ac æqualis conterminæ ABVI; quare
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              cum in accelerato motu velocitas, quæ habetur momen­
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              to C ad velocitatem momento S ſit vt imago ABC ſim­
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              plex ad ſegmentum eius ABVS: erit etiam QCR æqualis
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              ABC ad ſectionem ſolidi TSVX, quæ æquatur ABVS, vt
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              illa eadem velocitas momento C mobili inhærens ad ve­
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              locitatem momento S alterius accelerati motus. </s>
              <s id="s.000654">Eſt au­
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              tem ſectio TSVX ad libitum ſumpta; ergo ſolidum ABC­
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              QR poteſt ſumi merito vt imago velocitatum accelerati
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              motus, cuius ſimplex imago ABC: & eodem modo ſoli­
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              dum alterum vicem geret imaginis velocitatum alterius
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              motus ex ſimplici imagine GLH, itaque erit ob homoge­
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              neitatem ſpatium tranſactum motu accelerato iuxta ſim­
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              plicem imaginem ABC ad ſpatium tranſactum motu ac­
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              celerato iuxta ſimplicem imaginem GLH,
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              AC,
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              GH, vt ſolidum ABCQR ad ALHD, </s>
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