Subject
Education,General Mathematics
Reference16 articles.
1. Math Made Visual
2. On the Diagonals of a Cyclic Quadrilateral;Alsina C.;Forum Geom,2007
3. Bogomolny A. (2018). Ptolemy’s theorem. In: Interactive Mathematics Miscellany and Puzzles. http://www.cut-the-knot.org/proofs/ptolemy.shtml
4. Untersuchung der trigonometrischen Relationen des geradlinigen Viereckes;Bretschneider C. A.;Arch. Math. Phys,1842
5. Courant, R., Robins, H. (revised by Ian Stewart) (1996). What is Mathematics? An Elementary Approach to Ideas and Methods. New York: Oxford University Press, Inc., pp. 373–378.