I'm searching a way to make those svg path, but without luck for now. I was searching on the internet for a long time ... I know that css can do this but if someone knows how to build them with SVG it would be really nice.
Thank you
You should learn about SVG path commands.
https://www.w3.org/TR/SVG2/paths.html#PathData
For example, you can define such shapes by list of some path commands.
<svg viewBox="0 0 200 200" width="200" height="200">
<path d="M0 0l60 60a1 1 0 0 0 80 80l60 60h-200z"/>
</svg>
<svg viewBox="0 0 200 200" width="200" height="200">
<path d="M0 0l60 60a1 1 0 0 1 80 80l60 60v-200z"/>
</svg>