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Dynamic Geometry: Eyeball Theorem, circles, tangents, chords. HTML5 Animation for Mobile Devices.

Given two circles of centers A and B, draw the tangents AC, AD, BE, and BF from the center of each circle to the other. Then the chords MN and PQ are of equal length.

Static Geometry: Eyeball Theorem.

Dynamic Geometry, Eyeball Theorem, circles, tangents, chords, HTML5 Animation


Eyeball Theorem on Twitter



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Last update Aug 10, 2017