SVG

<!DOCTYPE html>
<html>
<body>

<svg height="1000" width="1000">
  <polygon points="100,10 40,198 190,78 10,78 160,198" style="fill:lime;stroke:purple;stroke-width:5;fill-rule:nonzero;"/>
  <line x1="0" y1="250" x2="200" y2="250" style="stroke:rgb(255,0,0);stroke-width:2" />
</svg>

</body>
</html>