10th Class Mathematics Sample Paper Sample Paper - 1 Term - 1

  • question_answer
    In the given figure, E is a point on side CB produced an isosceles ABC with AB AC. If AD BC and EF AC, prove that ABD-ECF.  

    Answer:

    is an isosceles triangle.                                   [given]                                                      (1) [angles opposite to equal sides] Now, in  and  we have               (1) [because  and(1/2)  [by AA similarity] (1/2) Hence proved.  


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