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8th Class Mathematics Understanding Quadrilaterals Question Bank Understanding Quadrilaterals

  • question_answer
    If AB and CD are diameters, what is ACBD?

    A)  A square

    B)                         A trapezium

    C)                         An isosceles trapezium

    D)                         A rectangle

    Correct Answer: D

    Solution :

    Since the angle in a semicircle is a right angle, clearly   \[\angle A=\angle C=\angle B=\angle D={{90}^{o}}\] The diagonals (diameters) are equal but they are not intersecting (bisecting) at right angles. Hence, it is not a square and can be only a rectangle.


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