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Bill White  
These Flash apps provide online practice deriving some unknown property of a figure given its other measures. Find the area of a trapezoid given its two base lengths and height; find one of its bases given its area and height; find its height given its area and bases. Find the area of a circle given its radius; find its area given its circumference; find its area given its diameter; find its circumference given its area. Find the area of a triangle given its base and altitude; find its base given its area and altitude; find its altitude given its area and height. See also White's .exe downloads for practicing arithmetic, geometry, measures of central tendency, and more on a PC.  


Levels:  Elementary, Middle School (68) 
Languages:  English 
Resource Types:  Problems/Puzzles, Archives/Download Sites, Web Interactive/Java 
Math Topics:  Conic Sections and Circles, Triangles and Other Polygons 
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