8 triangles puzzle by Jan Aarts.

Ionica Smeets tweeted this puzzle this week. https://twitter.com/ionicasmeets/status/1048490206477910016

There are 4 each of two different triangles.
Use all 8 triangles to form
* 3 triangles
* 2 triangles
* 1 triangle
* 1 rectangle

I had fun for a few minutes doing the first three challenges and a lot more time for the last one.

Spoiler alert: I think a quick glance at the scad won't give away the solutions, but they are in there. So you can download this, use it to 3D print th