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Math Help - Square and triangle.

  1. #16
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    Re: Square and triangle.

    Quote Originally Posted by bjhopper View Post
    ... ADP is isosceles because each of its long sides is a radius but also DC, DP, and CP are radii so DPC is equilateral.
    You cannot just say DC, DP and CP are radii of the 2 circles that you have drawn. Can you prove that point P intersects the 2 circles that you have drawn?


    Here's the exact same question, answered really well by Archie Meade.
    Math Help Forum - Prove

    Read post #17 (Second one down). The diagram is pretty much self explanatory.
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  2. #17
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    Re: Square and triangle.

    When angle PAB = 15 degrees it is provable. Construct the diagram .With a compass the circles meet in P
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