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Using the point Mb and the point Hb, construct a line b (rule W02);
% DET: points Mb and Hb are not the same
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Using the point Ha and the point Mb, construct a circle k(Mb,C) (rule W06);
% NDG: points Ha and Mb are not the same
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Using the circle k(Mb,C) and the line b, construct a point C and a point A (rule W04);
% NDG: line b and circle k(Mb,C) intersect
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Using the point Ha and the point C, construct a line a (rule W02);
% DET: points Ha and C 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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Using the line hb and the line a, construct a point B (rule W03);
% NDG: lines hb and a are not parallel
% DET: lines hb and a are not the same