SOLUTION: The midpoints of the sides of a triangle are (2,5),(4,2,(1,1).Find the coordinates of the three vertices.

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Question 1171359: The midpoints of the sides of a triangle are (2,5),(4,2,(1,1).Find the coordinates of the three vertices.
Answer by Edwin McCravy(20056) About Me  (Show Source):
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The midpoints of the sides of a triangle are (2,5),(4,2,(1,1).Find the coordinates of the three vertices.



In green, duplicate the left-most side below the right-most side
with one endpoint as that vertex:



In green, duplicate the left-most side again above the right-most side:



Connect the endpoints to the other two vertices



Duplicate those last two lines at the vertices:



What are the coordinates of those green vertices?

Edwin