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Geometry Problem 970: Equilateral Triangle, Circumcircle, Secant, Metric Relations. Level: School, College, Mathematics Education

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The figure shows an equilateral triangle ABC. D is on CB extended and DA intersects the circumcircle O at E. If AE = 4 and DE = 2, find BC. See also typography using iPad Apps.
 

    Geometry Problem 970: Equilateral Triangle, Circumcircle, Secant, Metric Relations

 

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