7th Class Mathematics The Triangle and its Properties Question Bank The Triangle and Its Properties

  • question_answer
    Find the measure of the angle x in the given figure.                                   

    A)  \[{{50}^{o}}\]                    

    B)  \[{{70}^{o}}\]        

    C)  \[{{60}^{o}}\]        

    D)         \[{{30}^{o}}\]        

    Correct Answer: B

    Solution :

    \[\angle EFD+\angle FED=x\] (Exterior angle property of a triangle)             \[\Rightarrow \]            \[{{28}^{o}}+{{42}^{o}}=\angle x\]             or         \[\angle x={{70}^{o}}\]


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