List of self-intersecting polygons

<p>Self-intersecting polygons, crossed polygons, or self-crossing polygons are <a href="/facts/Polygon/yAq7RjPz">polygons</a> some of whose <a href="/facts/Edge_(geometry)/3lFN6sEz">edges</a> cross each other. They contrast with <a href="/facts/Simple_polygon/C5CfrPWf">simple polygons</a>, whose edges never cross. 
</p><p>Some types of self-intersecting polygons are:
</p>
<ul><li>the <a href="/facts/Crossed_quadrilateral/QCGqrkp2">crossed quadrilateral</a>, with four edges
<ul><li>the <a href="/facts/Antiparallelogram/QDzKogA3">antiparallelogram</a>, a crossed quadrilateral with alternate edges of equal length
<ul><li>the <a href="/facts/Crossed_rectangle/mdLfIGKA">crossed rectangle</a>, an antiparallelogram whose edges are two opposite sides and the two diagonals of a <a href="/facts/Rectangle/mdLfIGKA">rectangle</a>, hence having two edges parallel</li></ul></li></ul></li>
<li><a href="/facts/Star_polygon/mDfuIe81">Star polygons</a>
<ul><li><a href="/facts/Pentagram/cN0ke8tp">pentagram</a>, with five edges</li>
<li><a href="/facts/Hexagram/IF4PEJbL">hexagram</a>, with six edges</li>
<li><a href="/facts/Heptagram/4jSuT6rB">heptagram</a>, with seven edges</li>
<li><a href="/facts/Octagram/4mfC9WqR">octagram</a>, with eight edges</li>
<li><a href="/facts/Enneagram_(geometry)/XLmA6xSX">enneagram</a> or nonagram, with nine edges</li>
<li><a href="/facts/Decagram_(geometry)/DzBUo8fY">decagram</a>, with ten edges</li>
<li><a href="/facts/Hendecagram/In2RwgbF">hendecagram</a>, with eleven edges</li>
<li><a href="/facts/Dodecagram/cJ5qjQWj">dodecagram</a>, with twelve edges</li>
<li><a href="/facts/Icositetragram/m9BNCKPv">icositetragram</a>, with twenty four edges</li>
<li><a href="/facts/257-gon/27MeycVu">257-gram</a>, with two hundred and fifty seven edges</li></ul></li></ul>

List of self-intersecting polygons open-in-new

List of self-intersecting polygons