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Math Help - angle between bisectors

  1. #1
    rcs
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    angle between bisectors

    The bisectors of the base angles of an isosceles triangle meet at I.
    Find the angle between the bisectors at their point of intersection
    if the vertex angle is 700


    May i know what does this mean?
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  2. #2
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    Re: angle between bisectors

    \alpha = \beta = \delta = \gamma

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  3. #3
    rcs
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    Re: angle between bisectors

    it is 125 degrees the angle in the intersection of the 2 base angle bisectors.
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