Baliani, Giovanni Battista, De motu naturali gravium solidorum, 1638
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              <s id="s.000200">PROPOSITIO XVI. PROBL. VIII.
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                <s id="s.000201">Data linea perpendiculari, & plano declinante; reperire
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                in perpendiculari producta punctum, quo perveniat
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                grave eo tempore, quo pertransit planum inclinatum.
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              <s id="s.000202">Data sit perpendicularis AB, cui connexum planum
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              inclinatum AD.
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              <s id="s.000203">Oportet in AB producta reperire punctum, quo perveniat
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              grave eo tempore, quo pervenit in puncto D.
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              <s id="s.000204">In puncto D perpendicularis erigatur ad AD, & protraha-
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              tur usquequo coeat cum AB producta in E, & E est pu-
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              nctum quaesitum. </s>
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              <s id="s.000205">Quoniam triangula & ADE, AEC sint aequiangula,
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              cum anguli ADE, AEC sint aequales, nempe recti, &
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              BAD communis
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              , sunt etiam similia
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              , ergo ut AC
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              ad AE, ita AE ad AD
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              , sed ut AC ad AD, ita qua-
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              dratum AC ad quadratum AE
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              , & ut AC ad AD,
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              ita quadratum temporis AC ad quadratum temporis A
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              D
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              , ergo ut quadratum AC ad quadratum AE ita qua-
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              dratum temporis AC ad quadratum temporis AD
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              , er-
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              go ut AC ad AE, ita tempus AC ad tempus AD
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              , sed
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              ut AC ad AE, ita tempus AC ad tempus AE
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              , ergo
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              tempora AE, & AD sunt aequalia. </s>
              <s id="s.000206">Quod &c.
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              Per 32.
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              prim.
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              Per 4.
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              sexti.
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              <s id="s.000209">
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              Per 4.
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              sexti.
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              </s>
              <s id="s.000210">
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              Per 19.
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              Sexti.
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              <s id="s.000211">
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              Per Cor.
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              7. hujus.
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              <s id="s.000212">
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              Per 11.
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              Quinti.
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              <s id="s.000213">
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              Per 22.
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              sexti.
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              </s>
              <s id="s.000214">
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              Per 11.
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              hujus.
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              </s>
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