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[Label1]
Caption=In this picture point A' is~~the inverted image of point A.~~~~Really, OA * OA' = [distance(A,O)*distance(A',O)], while~~the square radius of the circle~~is [or]І = [or^2].
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[Label4]
Caption=To construct the inverse point A' of point A with respect to circle ~~with the center O and radius R:~~1. Draw the line L1 through the point A and the center O.~~2. Draw perpendicular line L2 to the line L1 through the center O.~~3. Find the intersection point O1 of the line L1 and inverse circle.~~4. Draw the line L3 through the point O2 and the point R.~~5.  Draw the parallel line L4 through the point O1 to the line L3.~~6. Find the intersection point A' of the line L1 and the line L4.
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