Problem 11 Let A B C be a triangle and let PO be an

Last updated: 12/13/2022

Problem 11 Let A B C be a triangle and let PO be an arbitrary point Let P1 be the 120 rotation of PO around A Let P2 be the 120 rotation of P1 around B Let P3 be the 120 rotation of P2 around C Let P4 be the 120 rotation of P3 around A etc Prove that if P2019 PO then ABC is equilateral