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Using the point Ha and the point H, construct a line ha (rule W02);
% DET: points Ha and H are not the same
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Using the point Ha and the line ha, construct a line a (rule W10a);
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Choose freely a point C on the line a (rule WOnline2)
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Using the point C and the point H, construct a line hc (rule W02);
% DET: points C and H are not the same
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Choose freely a point A on the line ha (rule WOnline1)
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Using the point A and the point C, construct a point Mb (rule W01);
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Using the point A and the point Mb, construct a circle k(Mb,C) (rule W06);
% NDG: points A and Mb are not the same
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Using the circle k(Mb,C), the line hc, the point Mb and the point C, construct a point Hc (rule W05);
% NDG: line hc and circle k(Mb,C) intersect
% DET: points C and Hc must be different
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Using the point Hc and the point A, construct a line c (rule W02);
% DET: points Hc and A are not the same
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Using the line a and the line c, construct a point B (rule W03);
% NDG: lines a and c are not parallel
% DET: lines a and c are not the same