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Secant Intersection with Two Internally Tangent Circles


	If two circles are internally tangent at point A and a secant intersects the circles at B, C, D, and E, then BAD = CAE. Drag the orange points to change the figure.


	Contributed by: Jay Warendorff

Secant Line (Wolfram MathWorld)

"Secant Intersection with Two Internally Tangent Circles" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/SecantIntersectionWithTwoInternallyTangentCircles/

Contributed by: Jay Warendorff

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