Segal, Ruti, Moshe Stupel, and Alfinio Flores. “xamples of ultiple roofs in eometry: art 1, asks and ints”. Ohio Journal of School Mathematics 74, no. 2 (February 1, 2017). ccessed November 7, 2026. http://voyager.janeway.systems:9999/index.php/OJSM/article/view/5617.