Harriot, Thomas, Mss. 6787

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              <s xml:space="preserve">[
                <emph style="bf">Commentary:</emph>
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              <s xml:space="preserve"> The inclusion of a page number confirms that Harriot was using Commandino's edition of
                <emph style="it">Apollonii Pergaei conicorum libri quattuor</emph>
                <ref id="apollonius_1566"> (Apollonius </ref>
              . Proposition 33 explains how to find the tangent to any point of a parabola. </s>
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                <s xml:space="preserve"> I.33 If on a parabola some point is taken, and from it an ordinate is dropped to the diameter, and, to the straight line cut off by it on the diameter from the vertex, a straight line in the same straight line from its extremity is made equal, then the straight line joined from the point thus resulting to the point taken will touch the </s>
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              <s xml:space="preserve">]</s>
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          <head xml:space="preserve" xml:lang="lat"> Appoll. pa: 24.b
            <lb/>
          lib. 1. pr.
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          [
            <emph style="bf">Translation: </emph>
          Apollonius, page 24v, Book I, Proposition ]</head>
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Impressum