9th Class Mathematics Triangles Question Bank Triangles

  • question_answer
    In the given figure, if AE=AD and BD=CE, then  __ .

    A) \[\Delta BEC\cong \Delta BDC\]

    B) \[\Delta AEB\cong \Delta ADC\]

    C) \[BC=CD\]

    D) None of these

    Correct Answer: B

    Solution :

    We have, AE = AD and GE = BD \[\Rightarrow \]\[AE+CE=AD+BD\] \[\Rightarrow \]\[AC=AB\]                                         ?(i) Now, in \[\Delta AEB\]and \[\Delta ADC,\]we have AE = AD                                   [Given] \[\angle EAB=\angle DAC\]                                  [Common] \[AB=AC\]                                [From (i)] \[\therefore \]\[\Delta AEB\cong \Delta ADC.\]         [By SAS congruency]


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