Pg 607 - Q21

If you look at the triangle, you can tell that the point T would need to be placed symmetrically opposing point P in order to have the same perimeter (that is, point T would need to have a y coordinate of 3 to be even with P, and an x coordinate 1 space in from point O).  So point T would have to be at (1, 3) (B).
 

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