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9th Class Mathematics Quadrilaterals Question Bank Quadrilateral

  • question_answer
    In. the adjoining kite, diagonals intersect at O If \[\angle ABO={{32}^{{}^\circ }}\] and \[\angle \left( OCD \right)=\mathbf{4}{{\mathbf{0}}^{{}^\circ }}\], \[\angle \mathbf{ABC}\]

    A)  \[{{60}^{{}^\circ }}\]                       

    B)  \[{{64}^{{}^\circ }}\]      

    C)  \[{{75}^{{}^\circ }}\]                                   

    D)  \[{{90}^{{}^\circ }}\]

    Correct Answer: B

    Solution :

    (b): Given, ABCD is a kite As diagonal BD bisects ZABC, \[\angle ABC-2\angle ABO=2\times {{32}^{{}^\circ }}={{64}^{{}^\circ }}\]    


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