Heron Alexandrinus, Belopoiica, 1918

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    <archimedes>
      <text>
        <body>
          <chap>
            <p n="33">
              <s id="id.000171">
                <pb pagenum="50"/>
              </s>
            </p>
            <p n="34">
              <s id="id.000172">Ἔστωσαν αἱ δύο δοθεῖσαι εὐθεῖαι
                <lb n="34,1"/>
              αἱ ΑΒ, ΒΓ πρὸς ὀρθὰς [2ἀλλήλοισ]2
                <lb n="34,2"/>
              κείμεναι. </s>
              <s id="id.000173">ὧν δεῖ δύο μέσας ἀνὰ
                <lb n="34,3"/>
              λόγον εὑρεῖν καὶ συμπεπληρώσθω
                <lb n="34,4"/>
              τὸ ΑΒΓΔ παραληλλόγραμμον.
                <lb n="34,5"/>
              </s>
              <s id="id.000174">καὶ ἐπεζεύχθωσαν αἱ ΑΓ, ΒΔ.
                <lb n="34,6"/>
              </s>
              <s id="id.000175">καὶ ἐκβεβλήσθωσαν αἱ ΔΓ, ΔΑ·
                <lb n="34,7"/>
              καὶ παρακείσθω παρὰ τὸ Β σημεῖον
                <lb n="34,8"/>
              κανὼν τέμνων τὰς ἐκβαλλομένας
                <lb n="34,9"/>
              εὐθείας, καὶ κινείσθω ὁ εἰρημένος
                <lb n="34,10"/>
              κανὼν περὶ τὸ Β σημεῖον, ἄχρις
                <lb n="34,11"/>
              ἂν αἱ ἀπὸ τοῦ Ε ἐπὶ τὰς τομὰς
                <lb n="34,12"/>
              ἐπιζευγνύμεναι ἴσαι ἀλλήλαις ὦσι·
                <lb n="34,13"/>
              καὶ ἔστω ὁ μὲν κανὼν θέσιν
                <lb n="34,14"/>
              εἰληφὼς οἵαν ἔχει ἡ ΖΒΗ εὐθεῖα·
                <lb n="34,15"/>
              αἱ δὲ ἄλλαι δύο εὐθεῖαι αἱ ΕΖ, ΕΗ.
                <lb n="34,16"/>
              </s>
              <s id="id.000176">λέγω ὅτι τῶν ΑΒ, ΒΓ εὐθειῶν </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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