Generating a Cardioid II: Reflecting in Tangents
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Let A be a particular point (red) on a fixed circle. The set of points symmetric to A relative to all possible tangents to the circle lie on a cardioid.
Contributed by: Jaime Rangel-Mondragon (March 2011)
Open content licensed under CC BY-NC-SA
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"Generating a Cardioid II: Reflecting in Tangents"
http://demonstrations.wolfram.com/GeneratingACardioidIIReflectingInTangents/
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Published: March 7 2011