Today we did an investigation on the area of trapezoids and kites and how they compare to the area of a parallelogram. If you missed our activity today, please try it on your own from P. 729 of our textbook.
Also, check out the videos to see another demonstration of a derivation of these formulas:
http://www.brightstorm.com/math/geometry/area/area-of-trapezoids
http://www.brightstorm.com/math/geometry/area/area-of-kites-and-rhombuses
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