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  5. The Triangle and its Properties

7th Class Mathematics The Triangle and its Properties Question Bank Geometry

  • question_answer
    If \[\angle A=(4x+2){}^\circ ,\] the measure of the complementary of\[\angle A\]is equal to

    A)  \[\left( 178+4x \right){}^\circ \]      

    B)  \[\left( 88-4x \right){}^\circ \]

    C)  \[\left( 4x+88 \right){}^\circ \]         

    D)  \[\left( 6x-178 \right){}^\circ \]

    Correct Answer: B

    Solution :

        Complementary of\[\angle A=90{}^\circ -\angle A\] \[=90{}^\circ -\left( 4x+2 \right){}^\circ =90{}^\circ -4x{}^\circ -2{}^\circ \] \[=(88-4x){}^\circ \]


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