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8th Class Mathematics Practical Geometry Question Bank Geometry

  • question_answer
    In the figure CD is parallel to BA. The value of y is:

    A)  \[{{90}^{o}}\]                                

    B)  \[l||m,\]

    C)  \[{{130}^{o}}\]                              

    D)  \[{{50}^{o}}\]

    Correct Answer: B

    Solution :

    Since, \[{{60}^{o}}\] \[{{30}^{o}}\] \[{{80}^{o}}\] (Corresponding angle) Given:   \[{{100}^{o}}\] where   \[\angle DAC={{54}^{o}}\] (By using sum of angles of \[\angle ACB={{63}^{o}}\]) \[\angle BAC\] \[{{72}^{o}}\] \[{{54}^{o}}\]


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