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7th Class Mathematics Practical Geometry Question Bank Practical Geometry

  • question_answer
    In \[\Delta \text{ }XYZ,\]a, b, c denote the three sides, which of the following is incorrect?

    A)  \[a-b>c\]   

    B)  \[a+c>b\]      

    C)  \[a-b<c\]                    

    D)  \[a+b>c\]

    Correct Answer: A

    Solution :

    (a): Actually, \[a-b<c\forall \,a,b,c\] (the symbol, \[\forall \text{ }a,\text{ }b,\text{ }c\] means for all a, b, c) This implies that \[b-c<a;\,\,c-a<b\]          


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