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By the symmetry if you know the ycoordinates of A, B and C then you know the xcoordinates of G, F and E. I will show you how to find the coordinates of the points A. As you stated in the problem the angle AOP is 11.25 degrees and hence the slope of the line OA is tan(11.25). Thus the equation of the line OA is
The xcoordinate of A is 3 ^{3}/_{8} = 3.375 inches and hence the ycoordinate of A is
Penny  


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