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Using the point Mb and the point I, construct a line IMb (rule W02);
% DET: points Mb and I are not the same
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Using the point I and the point Mb, construct a circle k_over(I,Mb) (rule W09);
% NDG: points I and Mb are not the same
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Using the point B and the line IMb, construct a line BP`b (rule W16);
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Using the point Mb, the line BP`b and the point B, construct a line hMb,-1/1(BP`b) (rule W15);
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Using the circle k_over(I,Mb) and the line hMb,-1/1(BP`b), construct a point Bfo and a point Pb (rule W04);
% NDG: line hMb,-1/1(BP`b) and circle k_over(I,Mb) intersect
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Using the point Pb and the point I, construct a circle k(I,Pa) (rule W06);
% NDG: points Pb and I are not the same
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Using the circle k(I,Pa), the point B and the point I, construct a line c and a line a (rule W12);
% NDG: point B is outside the circle k(I,Pa)
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Using the circle k(I,Pa), the point Mb and the point I, construct a line x2 and a line b (rule W12);
% NDG: point Mb is outside the circle k(I,Pa)
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Using the line c and the line b, construct a point A (rule W03);
% NDG: lines c and b are not parallel
% DET: lines c and b are not the same
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Using the point Mb and the point A, construct a point C (rule W01);