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Math Help - Solving for X.

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    Senior Member vaironxxrd's Avatar
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    Solving for X.

    I need to solve for X in this problem first this are sides and i don't know how much do sides have to equal. I can't explain much because i don;t want to get you guys confused. The picture is uploaded.

    THE RED SPOTS ARE ARCS, (Congruent angles)[ITHINK]

    Last edited by mr fantastic; December 7th 2010 at 04:11 PM. Reason: Deleted begging from title.
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    Quote Originally Posted by vaironxxrd View Post
    I need to solve for X in this problem first this are sides and i don't know how much do sides have to equal. I can't explain much because i don;t want to get you guys confused. The picture is uploaded.

    Are those red blobs meant to signify that thoe two angles are the same? If so, then you have an isosceles triangle and so two of the sides (and you will have to decide which two) have the same length .....
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    Senior Member vaironxxrd's Avatar
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    Quote Originally Posted by mr fantastic View Post
    Are those red blobs meant to signify that thoe two angles are the same? If so, then you have an isosceles triangle and so two of the sides (and you will have to decide which two) have the same length .....
    Well the sheet i have is Black and white , and the lines are a arc just like that so i assume those angles are congruent. if the angles are congruent the sides are also congruent?
    (Sorry for not specifying the color)
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    Quote Originally Posted by vaironxxrd View Post
    Well the sheet i have is Black and white , and the lines are a arc just like that so i assume those angles are congruent. if the angles are congruent the sides are also congruent?
    (Sorry for not specifying the color)
    Read what I posted.
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    Senior Member vaironxxrd's Avatar
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    Quote Originally Posted by mr fantastic View Post
    Read what I posted.
    Found it heres the picture with the answer din't seem so hard, but is this answer even possible? it;s overpassing 180

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    I don't think those values are angles ... looks like side lengths to me.
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    Senior Member vaironxxrd's Avatar
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    Quote Originally Posted by skeeter View Post
    I don't think those values are angles ... looks like side lengths to me.
    Yea sorry that's what i was asking can Sides be any length?
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    Quote Originally Posted by vaironxxrd View Post
    Yea sorry that's what i was asking can Sides be any length?
    Obviously whoever wrote the question knew in advance what the sidelengths were that enabled the triangle to be formed, and then expressed those sidelengths in terms of x.
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    Senior Member vaironxxrd's Avatar
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    Quote Originally Posted by mr fantastic View Post
    Obviously whoever wrote the question knew in advance what the sidelengths were that enabled the triangle to be formed, and then expressed those sidelengths in terms of x.
    one last question. Did i got X right which is 35 or not?
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    Quote Originally Posted by vaironxxrd View Post
    one last question. Did i got X right which is 35 or not?
    Correct.
    Last edited by mr fantastic; December 9th 2010 at 02:41 AM.
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    Post Answer!

    Quote Originally Posted by vaironxxrd View Post
    I need to solve for X in this problem first this are sides and i don't know how much do sides have to equal. I can't explain much because i don;t want to get you guys confused. The picture is uploaded.

    THE RED SPOTS ARE ARCS, (Congruent angles)[ITHINK]

    The triangle is iscoseles. Therefore, the two "Legs" are congruent. This means that you can find the value of x by making the 2 legs equal to each other.

    4x + 10 = 5x - 25

    x = 35

    Both of the legs are equal so it doesnt matter what equation you put x back into.

    So, 4 x 35 + 10 =140

    Then, after that just put the value of x into the base to find the length.

    3 x 35 + 5 = 110

    So, the sides are 110, 140, 140

    And, yes the sides can be any length. Only the angles have to add up to 180.

    I know this was already answered but i just posted this to put all of the information into one reply.

    Hope this helps!
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