10th Class Mathematics Triangles Question Bank Triangles

  • question_answer
    In \[\Delta \]le PQR (See figure), \[\frac{PL}{LQ}=\frac{PM}{MR}\]. Nature of \[\Delta \,PQR\]is as follows:

    A)  Acute angled triangle                            

    B)  Isosceles triangle        

    C)  Right triangle                            

    D)  Scalene triangle                                                 

    Correct Answer: B

    Solution :

    (b): From data, \[\Delta \text{ }PQR\tilde{\ }\Delta \text{ }PLM\] \[\Rightarrow \]\[\angle PQR=\theta \]\[\Rightarrow \]\[\angle PQR=\angle PRQ\] \[\Rightarrow \]\[PQ=PR\]                    


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