Maths Olympiad Prep

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, 2022

Geometry Difficulty 5.0 AIME, harder Prove it United Kingdom

The points AA, BB and CC lie, in that order, on a straight line. Line CDCD is perpendicular to ACAC, and CD=ABCD = AB. The point EE lies on the line ADAD, between AA and DD, so that EB=EC=ABEB = EC = AB. Calculate the size of the angle BAEBAE.

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