last.svg

<svg viewBox="0 0 100 100"
  xmlns="http://www.w3.org/2000/svg">
<polygon points="5,5 5,95 70,50"
  fill="black" stroke="black" stroke-width="1"/>
<line x1="85" y1="5" x2="85" y2="95" style="stroke:black;stroke-width:15"/>
</svg>