Results 1 to 8 of 8

Math Help - Angles in Parallel Lines

  1. #1
    Junior Member
    Joined
    Feb 2008
    Posts
    60

    Angles in Parallel Lines

    In this question I have been asked to find a and I need to GIVE REASONS for my arguments.

    I have no idea how to find a.

    Any help is greatly appreciated, thank you!!
    Attached Thumbnails Attached Thumbnails Angles in Parallel Lines-geo.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Lord of certain Rings
    Isomorphism's Avatar
    Joined
    Dec 2007
    From
    IISc, Bangalore
    Posts
    1,465
    Thanks
    6
    Quote Originally Posted by stellina_91 View Post
    In this question I have been asked to find a and I need to GIVE REASONS for my arguments.

    I have no idea how to find a.

    Any help is greatly appreciated, thank you!!
    Hello stellina,

    Where is a?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Feb 2008
    Posts
    60
    Oops sorry! I meant x, thanks for picking that up
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Lord of certain Rings
    Isomorphism's Avatar
    Joined
    Dec 2007
    From
    IISc, Bangalore
    Posts
    1,465
    Thanks
    6
    Quote Originally Posted by stellina_91 View Post
    In this question I have been asked to find a and I need to GIVE REASONS for my arguments.

    I have no idea how to find a.

    Any help is greatly appreciated, thank you!!
    If Ay || CD, then the answer is 60 degrees. Because you can extend Ay to meet the other line and then make a parallelogram. After that use parallelogram properties.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Junior Member
    Joined
    Feb 2008
    Posts
    60
    Oh sorry again, I am supposed to find y

    I apologise for any confusion.
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Lord of certain Rings
    Isomorphism's Avatar
    Joined
    Dec 2007
    From
    IISc, Bangalore
    Posts
    1,465
    Thanks
    6
    Quote Originally Posted by stellina_91 View Post
    Oh sorry again, I am supposed to find y

    I apologise for any confusion.
    What exactly is y?
    Isnt it just 360 - 120 = 240?
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Junior Member
    Joined
    Feb 2008
    Posts
    60
    I'm sorry again! I read the diagram wrong, I'm only supposed to find a, so the a is the x and I have but b in to show my reasons.

    Can I then say:

    Extending AB out to F:

    b = 180 - 120 (adjacent angles on a straight line)
    b = 60

    Therefore,
    a = 60 (opposite angles of a parallelogram are equal)
    Follow Math Help Forum on Facebook and Google+

  8. #8
    Junior Member
    Joined
    Feb 2008
    Posts
    60
    Here is the diagram. Oh now my diagrams aren't showing, I'll start a new post.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 6
    Last Post: February 24th 2011, 01:26 AM
  2. Replies: 1
    Last Post: March 14th 2010, 01:22 PM
  3. Replies: 2
    Last Post: January 25th 2009, 08:41 PM
  4. Angles in Parallel Lines NEW!
    Posted in the Geometry Forum
    Replies: 1
    Last Post: April 16th 2008, 10:07 PM
  5. parallel and angles
    Posted in the Geometry Forum
    Replies: 2
    Last Post: May 4th 2007, 04:08 AM

Search Tags


/mathhelpforum @mathhelpforum