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Using the point Hb and the point Tb, construct a line b (rule W02);
% DET: points Hb and Tb are not the same
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Using the point Hb and the line b, construct a line hb (rule W10b);
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Choose freely a point B on the line hb (rule WOnline2)
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Using the point B and the point Tb, construct a line sb (rule W02);
% DET: points B and Tb are not the same
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Using the point Hb, the point B, the point Tb, the line sb and the line hb, construct a line BO (rule W17);
% NDG: points B and Tb are not the same points Hb and B are not the same
% DET: points B and Tb are not the same
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Choose freely a point A on the line b (rule WOnline1)
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Using the point A and the point B, construct a point Mc (rule W01);
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Using the point A and the point B, construct a line c (rule W02);
% DET: points A and B are not the same
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Using the point Mc and the line c, construct a line mc (rule W10b);
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Using the line mc and the line BO, construct a point O (rule W03);
% NDG: lines mc and BO are not parallel
% DET: lines mc and BO are not the same
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Using the point A and the point O, construct a circle k(O,C) (rule W06);
% NDG: points A and O are not the same
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Using the circle k(O,C), the line b, the point O and the point A, construct a point C (rule W05);
% NDG: line b and circle k(O,C) intersect
% DET: points A and C must be different