3D Rectangles and Circles Between 2 Lines

Red Lines: The start and end of the "Integral." Just grab them and drag them!
n: Adjusts number of intervals. The number of rectangles and squares is always one more than the number of intervals.
theta: The angle of the rectangles / circles.
RecH: The height of the rectangles. This does not affect the circles.

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Sankey, June 26, 2009, Created with GeoGebra