Behold all-new equations for triangles!

Thanks to Jane Street for supporting this video. Check out their open roles, programs and events: Here is the original “Is there an equation for a triangle?“ video. (I’m taking suggestions for what Part III should be named. Comment below.) And thanks to everyone who contributed to the triangleness. Here are all the triangles and non-triangles mentioned in this video: Mohammed Jafari’s close-but-not-triangle: Generic Viewer’s close-but-not-triangle: Harrison’s non-generalised triangle: Idiotinium’s non-generalised triangle: Jaden’s non-generalised triangle: Tristan’s non-generalised triangle: