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<p>to <a href="page.php?w=Torsion_of_curves">torsion</a> is constant.</p>

<p>A curve is called a <b>slant helix</b> if its principal normal makes a constant angle with a fixed line in space. It can be constructed by applying a transformation to the moving frame of a general helix.</p>

<p>For more general helix-like space curves can be found, see <a href="page.php?w=space_spiral">space spiral</a>; e.g., <a href="page.php?w=spherical_spiral">spherical spiral</a>.</p>

<p><big>Handedness</big></p>
<p>Helices can be either right-handed or left-handed. With</p><p>
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