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A2-13: ELLIPSE DRAWING BOARD 9 years 10 months ago #209

  • mike1
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ID Code: A2-13
Purpose: Demonstrate one method of drawing ellipses
Description: The ends of a string loop are hooked around two pegs on the board and kept tight by the chalk holder. Moving the string around one complete turn produces an ellipse. This procedure creates the locus of points where R1 + R2 = Constant, the equation for an ellipse. Changing the peg position changes the eccentricity of the ellipse.
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