Ceva, Giovanni, Geometria motus, 1692
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              velocitatum. </s>
              <s id="s.000206">Ex eadem ratione patet eſſe velocitates ſum­
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              mas, vel homologas vti diximus in ratione compoſita dicto­
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              rum ſpatiorum, & ipſorum temporum.
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              Corollarium III.
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              Quare ſi alteræ de dua
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              bus componentibus æqualis fuerit,
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              reliqua tantùm computanda erit.
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              Scholium.
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              Hinc emergit omnis ferè doctrina grauium cum
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              prorſus libera, aut ſuper planis inclinatis ad horizontem̨:
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              nec accidit veritates iam patefactas huc rurſus lectoris taedio
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              afferre, ſed libeat potius, rationem metiendarum imaginum,
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              quamuis longitudine immenſarum, noſtra methodo exponere.
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              DEF. VIII.
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              Tab.
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              2.
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              Fig.
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              6.</s>
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              <s id="s.000213">SInt inter binas parallelas AB, GH, et IK, PQ planæ fi­
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              guræ ABHG, IKQP, & in altera earum ducta altitudi­
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              ne RV, ſint inter ſe ipſæ figuræ talis naturæ, vt cum ſit
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              GABH ad ſegmentum EABF factum per æquidiſtantem
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              ipſi GH ſicut VR ad RT, verificetur ſemper (ducta æqui­
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              diſtanti NTO ipſi PQ) eſſe GH ad EF vt reciprocè NO ad
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              PQ tunc huiuſmodi figuras vocabimus inter ſe auuerſas. </s>
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              Corollarium.
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              Sequitur ex vi nunc allatæ deffin., lineam IK tunc eſſe in­
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              finitam, cum AB fuerit punctum, & ideo ſimul conſtat figu­
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              ram IPQK immenſam eſſe longitudine versùs K aut I, aut
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              vtrinque, ſi nempe producerentur nunquam coituræ lineæ
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              QP, IK.
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