This website is amazing, linear algebra with interactive examples. Vectors, matrix, dot product, etc, cool resource for learning. #GameDev #Math http://immersivemath.com/ila/index.html
Immersive Math

@djlink that's great! Do you know in what chapter they show the gif in your post? (the one with the triangle projected to a plane)
@Emil sorry can't remember exactly, I glued together from several chapters.
@djlink found it in the dot product chapter (example 3.11)