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Using the point Mb and the point Tb, construct a line b (rule W02);
% DET: points Mb and Tb are not the same
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Using the point Tb and the point I, construct a line sb (rule W02);
% DET: points Tb and I are not the same
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Using the point Mb and the line b, construct a line mb (rule W10b);
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Using the line mb and the line sb, construct a point Nb (rule W03);
% NDG: lines mb and sb are not parallel
% DET: lines mb and sb are not the same
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Using the point I and the point Nb, construct a circle k(Nb,A) (rule W06);
% NDG: points I and Nb are not the same
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Using the circle k(Nb,A) and the line b, construct a point A and a point C (rule W04);
% NDG: line b and circle k(Nb,A) intersect
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Using the point I and the line b, construct a circle k(I,Pa) (rule W11);
% NDG: point I is not incident to the line b
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Using the circle k(I,Pa), the point A, the point I and the line b, construct a line c (rule W13);
% NDG: point A is outside the circle k(I,Pa)
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Using the line c and the line sb, construct a point B (rule W03);
% NDG: lines c and sb are not parallel
% DET: lines c and sb are not the same