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9th Class Mathematics Lines and Angles Question Bank Lines and Angles

  • question_answer
    In the given figure, \[AB||CD\] and\[CD||EF\]. Also\[EA\bot AB\]. If\[\angle BEF={{55}^{o}}\], find the value of\[x-z\]

    A) \[{{0}^{o}}\]              

    B)        \[{{50}^{o}}\]

    C) \[{{80}^{o}}\]            

    D)        \[{{90}^{o}}\]

    Correct Answer: D

    Solution :

    \[x+{{55}^{o}}={{180}^{o}}\]         [Since EF||AB] \[x={{125}^{o}}\] and \[z={{90}^{o}}-{{55}^{o}}={{35}^{o}}\] \[x-z={{125}^{o}}-{{35}^{o}}={{90}^{o}}\]


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