n"><dt>Returns</dt><dd>The determinant of the two-dimensional square matrix. </dd></dl>
<div class="fragment"><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;                                                          {</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;  <span class="keywordflow">return</span> vector1.x() * vector2.y() - vector1.y() * vector2.x();</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160