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7th Class Mathematics Lines and Angles Question Bank Lines And Angles

  • question_answer
    In the given figure,      \[AB||GH||DE\]and \[GF||BD||HI\] \[\angle FGC={{80}^{o}}\]. Find the value of \[\angle CHI\].                               

    A)  \[{{80}^{o}}\]                    

    B)  \[{{120}^{o}}\]      

    C)         \[{{100}^{o}}\]      

    D)         \[{{160}^{o}}\]      

    Correct Answer: A

    Solution :

    \[GF||HI\]and GH is the transversal line. So, \[\angle FGC=\angle CHI\](Alternate interior angles) \[\therefore \]  \[\angle CHI={{80}^{o}}\]


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