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Fuzhou quality inspection mathematics examination paper
I don't think there is a solution to this problem.

Only the coordinates of point d are given, but AD=DC=? know nothing at all

Point p of similar center: connect the intersection of AG EC to get P, and P is on the X axis.

If the coordinates (2, 2) of a are known.

The answer to this question is OP=2/3.

Then the coordinate of the center point p is (2/3,0).