Results 1 to 2 of 2

Math Help - Triangle Help

  1. #1
    Newbie
    Joined
    Sep 2009
    Posts
    8

    Triangle Help

    Please explain why the third answer is correct. Thank you.

    PS - You can click on the picture to see it full size.
    Attached Thumbnails Attached Thumbnails Triangle Help-geometryproblem1.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor red_dog's Avatar
    Joined
    Jun 2007
    From
    Medgidia, Romania
    Posts
    1,252
    Thanks
    5
    We have \widehat{RQS}=\widehat{RSQ}=\alpha

    \widehat{TSU}=\widehat{TUS}=\beta

    If we know both \alpha and \beta then we can find x. For this we have:

    \alpha+x+\beta=180^{\circ} and

    180^{\circ}-2\alpha+180^{\circ}-2\beta=90^{\circ}

    and we get x=45^{\circ}

    But if we know just \alpha (or just \beta) then we can't find x.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: April 23rd 2011, 09:10 AM
  2. Replies: 3
    Last Post: April 30th 2009, 08:41 AM
  3. Replies: 1
    Last Post: October 28th 2008, 08:02 PM
  4. Replies: 7
    Last Post: July 19th 2008, 07:53 AM
  5. Replies: 27
    Last Post: April 27th 2008, 11:36 AM

Search Tags


/mathhelpforum @mathhelpforum