The Red Triangle Puzzle

This puzzle was originally created by WeltderGeduldspiele over on thingiverse. The goal is to fit all the pieces inside of the square frame. It's similar to the tangram puzzle, but the solutions (there are multiple) are quite different.

The printing is very straightforward, just regular settings and no supports needed. 

I cut of a chunk of material at the corners of the frame, to save material and make it look cleaner. I also polished the design a bit with rounded edges and a smoother fit for the red triangle.