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Math Help - Angles in Parallel Lines NEW!

  1. #1
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    Angles in Parallel Lines NEW!

    The diagram in black is the original diagram and the red as well as the 'F' is what I have constructed.

    Would it be right to say:

    Construct a line AF

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

    Therefore,

    a = 60 (opposite angles of a parallelogram are equal)

    Thanks.
    Attached Thumbnails Attached Thumbnails Angles in Parallel Lines NEW!-fh.jpg  
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  2. #2
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    seems right to me...
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