Results 1 to 2 of 2

Math Help - Find an angle

  1. #1
    Member
    Joined
    Dec 2007
    Posts
    90

    Find an angle

    Hey

    I'm trying to find angle g and am completely stuck.
    Any help would be awesome thanks


    gracey x
    Attached Thumbnails Attached Thumbnails Find an angle-angleg.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member

    Joined
    May 2006
    From
    Lexington, MA (USA)
    Posts
    11,909
    Thanks
    771
    Hello, gracey!

    You left out something in the diagram.
    I'll take a guess at what you meant.


    Given: . \angle A = 43^o,\;AB = BC,\;{\color{blue}CD = DE}\;\;{\color{red}?}

    Find: . \angle g

    Code:
                    B
                    o
                  *   *
                *       *
              *           *
            * 43       43 *
        A o   *   *   *   *   o   *   *   *   o E
                              C * 43    g  *
                                  *       *
                                    *   *
                                      o
                                      D

    Since \Delta ABC is isoscles: . \angle BCA \,=\,\angle A \,=\,43^o

    Since \angle BCA and \angle ECD are vertical angles: . \angle ECD \,=\,43^o

    Since \Delta CDE is isosceles: . \angle g \,=\,\angle ECD \,=\,43^o

    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Find the ANGLE
    Posted in the Geometry Forum
    Replies: 19
    Last Post: August 14th 2011, 09:05 AM
  2. find the angle
    Posted in the Geometry Forum
    Replies: 1
    Last Post: May 2nd 2011, 05:16 PM
  3. Replies: 1
    Last Post: April 4th 2011, 12:36 PM
  4. Help me find the angle
    Posted in the Trigonometry Forum
    Replies: 10
    Last Post: August 28th 2009, 10:28 AM
  5. Replies: 3
    Last Post: April 16th 2009, 09:45 AM

Search Tags


/mathhelpforum @mathhelpforum