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| Question 1157931:  Mary went for a mountain bike ride in a relatively flat wooded area.  She rode for 6 km in one direction and then turned and pedalled 5 km in another. Finally, she turned in the direction of her starting point and rode 9 km.  When she stopped, was it possible that Mary was back at her starting point?  Explain.
 Answer by greenestamps(13209)
      (Show Source): 
You can put this solution on YOUR website! 
 Yes.
 
 If she is back at her starting point, then the three legs of the trip form a triangle.
 
 A triangle with sides of lengths 5, 6, and 9 is possible, because 9 is less than the sum of 5 and 6.
 
 
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