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Math Help - SAT Test Question (Isosceles)

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    Senior Member vaironxxrd's Avatar
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    SAT Test Question (Isosceles)

    I can't quite understand how to get the degree of the triangle the question asked for. If possible can someone spoon feed me on this one?
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    Re: SAT Test Question (Isosceles)

    Quote Originally Posted by vaironxxrd View Post
    I can't quite understand how to get the degree of the triangle the question asked for. If possible can someone spoon feed me on this one?
    I will never do that.
    But note that if m\left( {\angle MAC} \right) = x then 4x=140.
    If you have trouble with that then you have a great deal of work to do to get ready for the SAT.
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    Senior Member vaironxxrd's Avatar
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    Re: SAT Test Question (Isosceles)

    Quote Originally Posted by Plato View Post
    I will never do that.
    But note that if m\left( {\angle MAC} \right) = x then 4x=140.
    If you have trouble with that then you have a great deal of work to do to get ready for the SAT.
    I believe I still have allot to learn to get ready for my nov-5 SAT. But I'm willing to learn as much as I can, my current classes are giving me allot of work. Anyways
    x=35
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    Re: SAT Test Question (Isosceles)

    Quote Originally Posted by vaironxxrd View Post
    x=35
    Correct.

    You now know that {\angle MAC}=35^\circ

    What does {\angle}AMC equal?
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    Re: SAT Test Question (Isosceles)

    Quote Originally Posted by vaironxxrd View Post
    I can't quite understand how to get the degree of the triangle the question asked for. If possible can someone spoon feed me on this one?

    This is a very easy question.

    Angle BAC = Angle BCA = (180 - 40)/2 = 70

    So angle MAC = angle MCA = 35

    now ,

    70+ angle AMC = 180
    So angle AMC = 110

    (A) is the correct answer.
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