Hello and welcome to the biggest analysis you'll ever read on a triangle. This is the published version of my analysis on Bill Cipher's past from Gravity Falls. It is over 90 pages long in Google docs and took two years to complete. In this post, I will be going over everything I have discovered to Bill's past after I read the book Flatland, a romance of many dimensions. This is the book he is based off of. I have discovered things no one has yet, things that explain everything. Read it to find more!