Does this work for the following case?

[kamleshwarang]

I have four points from a rectange (the 4 ends) and its corresponding 4 points from the moved / rotated rectange. They are exactly the same shape.

Say Rect 1 (1,1,0) (1,10,0), (10,10,0) and (10,1,0) rect 2 (100, 10,0) (100,110,0) (100,210,0) and (200, 10, 0)

I have a new unknown point (3,7,0) in the source rect1 that i wish to know the corresponding co-ordinate in rect 2.

How would i apply this ? I am a newbie and any help here would be greatly appreciated!!