>A</strong>, <strong>P</strong>, and <strong>B</strong> will appear in a clockwise order.</p>
<p>This method uses the cross product of vectors <strong>PA</strong> and <strong>PB</strong>:</p>
<p>$$
a \times b = a_x b_y - a_y b_x
$$</p>
<p>Since this method avoids division, it eliminates precision issues, making it stable for determining whether a segment is below a point.</p>
<h2 id="selecting-the-closest-segment-under-point"><a class="header" href="#selecting-the-closest-segment-under-point">Selecting the 