Here is a tutorial on how to draw an impossible triangle. Anything red or blue is the step you are on. Press space to advance. This can be kind of hard at first. I recommend doing your first one on paper and not computer. Comment if you are having problems with any of the steps and I can make them clearer.
△ Art and Coding- @sisters118 △ Music- Lights by Ellie Goulding △ I first leaned how to do this in a book my mom got me called This is NOT a Math Book by Anna Weltman. It's a super fun book with mathematical art projects. △ this triangle is called impossible because none of the sides connect. △ REMIX AND SHOW ME YOURS!!!!!!!!!