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5th Class Mathematics Geometry Question Bank Geometry

  • question_answer
    The measures of the four angles of a quadrilateral are in the ratio of 1:2:3:4. What is the measure of fourth angle?

    A)  \[{{144}^{o}}\]         

    B)  \[{{135}^{o}}\]           

    C)  \[{{125}^{o}}\]                              

    D)  \[{{150}^{o}}\]

    Correct Answer: A

    Solution :

    Let the angles are x, 2x, 3x and 4x \[x+2x+3x+4x=360{}^\circ \] \[10x={{360}^{o}}\] \[x=36{}^\circ \] 4th angle = \[4\times x=4\times 36={{144}^{o}}\]                       


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