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Ellipse Anatomy

Author:
Josh Berberian
Topic:
Ellipse
Drag the yellow control point. Which values in the table remain constant? Which change? Can you explain why? Drag blue control point F2. Which values in the table remain constant? Which change? Can you explain why? Reveal the ellipse anatomy. Are any of your conjectures confirmed?
Ellipses from Wolfram-Alpha Ellipses from Cut-The-Knot

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