7th Class Mathematics Congruence of Triangles Question Bank Congruence of Triangles

  • question_answer
    \[\Delta ABC\] is congruent to \[\Delta XYZ\]. Find the measures of \[\angle x\] and \[\angle y\] respectively.

    A)        \[{{80}^{o}},{{60}^{o}}\]      

    B)         \[{{60}^{o}},{{40}^{o}}\]

    C)                  \[{{80}^{o}},{{40}^{o}}\]             

    D)         \[{{60}^{o}},{{80}^{o}}\]

    Correct Answer: A

    Solution :

     \[\Delta \,\,ABC\cong \Delta XYZ\] \[\Rightarrow \] \[\angle A=\angle x={{180}^{o}}-({{60}^{o}}+{{40}^{o}})={{80}^{o}}\] Similarly, \[\angle y=\angle B={{60}^{o}}\]


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