Segal, Ruti, Moshe Stupel, and Alfinio Flores. “Examples of Multiple Proofs in Geometry: Part 1, Tasks and Hints”. Ohio Journal of School Mathematics 74, no. 2 (February 1, 2017). Accessed May 2, 2024. https://ohiomathjournal.org/index.php/OJSM/article/view/5617.