Carter, Cuevas, Day, Malloy, Cummins. (2011). Florida geometry. (pp. 435-437). Columbus, OH: The McGraw-Hill Companies, Inc.
Ryan, M. (2008, January). The properties of trapezoids and isosceles trapezoids. Retrieved from http://www.dummies.com/how-to/content/the-properties-of-trapezoids-and-isosceles-trapezo.html
(2013). Trapezoid lesson [Web Photo]. Retrieved from http://www.freemathhelp.com/images/lessons/quad1.png
Properties of trapezoids and kites. (n.d.). Retrieved from
http://www.wyzant.com/resources/lessons/math/geometry/quadrilaterals/trapezoids_and_kites
Chichen itza ruins. (2013). Retrieved from http://chichenitzaruins.org/
Gold Blocks [Web Graphic]. Retrieved from http://www.kathana.in/assets/images/goldenPyramidIcon.jpg
Popcorn Container [Web Graphic]. Retrieved from
http://4.bp.blogspot.com/-uFBP6IFZpZU/TyClUMdg_NI/AAAAAAAAAX8/KbaVYUdPzi0/s1600/Popcorn+Writing+002.jpg
The properties of a trapezoid. (1997). Retrieved from http://www.coolmath.com/reference/trapezoids.html
Isosceles Trapezoid [Web Graphic]. Retrieved from
http://upload.wikimedia.org/wikipedia/commons/thumb/5/5e/Isoscelestriangle2.svg/350px-Isoscelestriangle2.svg.png
Ryan, M. (2008, January). The properties of trapezoids and isosceles trapezoids. Retrieved from http://www.dummies.com/how-to/content/the-properties-of-trapezoids-and-isosceles-trapezo.html
(2013). Trapezoid lesson [Web Photo]. Retrieved from http://www.freemathhelp.com/images/lessons/quad1.png
Properties of trapezoids and kites. (n.d.). Retrieved from
http://www.wyzant.com/resources/lessons/math/geometry/quadrilaterals/trapezoids_and_kites
Chichen itza ruins. (2013). Retrieved from http://chichenitzaruins.org/
Gold Blocks [Web Graphic]. Retrieved from http://www.kathana.in/assets/images/goldenPyramidIcon.jpg
Popcorn Container [Web Graphic]. Retrieved from
http://4.bp.blogspot.com/-uFBP6IFZpZU/TyClUMdg_NI/AAAAAAAAAX8/KbaVYUdPzi0/s1600/Popcorn+Writing+002.jpg
The properties of a trapezoid. (1997). Retrieved from http://www.coolmath.com/reference/trapezoids.html
Isosceles Trapezoid [Web Graphic]. Retrieved from
http://upload.wikimedia.org/wikipedia/commons/thumb/5/5e/Isoscelestriangle2.svg/350px-Isoscelestriangle2.svg.png