Works Cited


Bogomolny, A. (2013). Thale's theorem from interactive mathematics miscellany and puzzles. Retrieved from http://www.cut-the-knot.org/Curriculum/Geometry/GeoGebra/ThalesTheorem.shtml

Burton, D. (2005). The history of mathematics: An introduction. (6th ed.). Columbus, OH: McGraw-Hill.

Gibson, C. (2003). Elmentary euclidean geometry: An introduction. West Nyack, NY: Cambridge University Press.

Jacobs, H. (2003). Geometry: Seeing, doing, understanding. (3rd ed.). New York, NY: W.H. Freeman & Compnay.

Meyer, W. (1999). Geometry and its applications. San Diego, CA: Academic Press.

Pierce, Rod. (16 May 2012). "Triangles Contain 180 Degrees". Math Is Fun. Retrieved 2 Dec 2013 from http://www.mathsisfun.com/proof180deg.html

The Bridge of Asses. (2013). In Encyclopaedia Britannica. Retrieved from http://www.britannica.com/EBchecked/topic/724634/The-Bridge-of-Asses

Venema, C. (2010, March 15). Chapter 5: Euclidean geometry. Retrieved from http://www.calvin.edu/~venema/courses/m301/S10/chapter5.pdf

Wilson, J. (2010). Overview of section 1.2 congruence of triangles. Retrieved from http://jwilson.coe.uga.edu/MATH7200/Sect1.2.html

Wolfe, H. (1945). Introduction to non-euclidean geometry. New York, NY: Holt, Rinehart, and Winston.