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Math Help - Exterior and Interior Angles

  1. #1
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    Oct 2007
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    178

    Exterior and Interior Angles

    "We remember that the measure of an exterior angle of a triangle equals the sum of the measure of the remote interior angles."

    What did it say? And if I understand it (a angle on the outside = some angles somewhere on the inside), I don't get the concept.

    Thanks!
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  2. #2
    Senior Member
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    Melbourne
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    x = y + z
    Exterior and Interior Angles-exter.jpg
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