🔺 #shirt #shorts 🔺 join our brain food club to get it! null In this short, we say hello to the "Sherman line" -- a feature of all triangles that made B.F. Sherman say, "what else was there to call [it] but the fourth side of the triangle?” Check out this interactive version @amazinglybland on twitter made! https://t.co/lMTauaQP0d?amp=1 Sherman's original paper: https://www.jstor.org/stable/2690519