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    Geometry Proof : Isoceles Triangle

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    1.Given: B is the midpoint of AC
    BD is perpendicular to AC

    Prove Triangle ADC is isosceles
    (hint: first prove triangle CBD is congruent to triangle ABD)

    The second part uses to same diagram

    Given DB is perp to AC
    AD is congruent to DC
    m of angle C is 70 degrees

    Find measure of ADB

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