Oxman, Victor, and Moshe Stupel. “roof ithout ords: risection of a Parallelogram’s iagonal (p. 58)”. Ohio Journal of School Mathematics 84, no. 1 (April 9, 2020). ccessed November 7, 2026. http://voyager.janeway.systems:9999/index.php/OJSM/article/view/7602.