7th Class Mathematics Sample Paper Mathematics Sample Paper - 3

  • question_answer
    In the figure, AC = BD and AD = BC. Which of the following statements is meaningfully written?
    (a) \[\Delta ABC\cong \Delta ABD\]
    (b) \[\Delta ABC\cong \Delta BAD\].
     

    Answer:

    (a) Statement\[\Delta ABC\cong \Delta ABD\]is not meaningfully written as
    AB = AB     [Common]
    BC = BD     [Incorrect]
    and,            CA = DA     [Incorrect]                                                                                                  
    (b) Statement\[\Delta ABC\cong \Delta BAD\]is meaningfully written as
    AB = AB    [Common]
    BC == AD              [Given]
    And CA - DB            [Given] 


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