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Using the point Ma and the point Ha, construct a line a (rule W02);
% DET: points Ma and Ha are not the same
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Using the point Ma and the line a, construct a line ma (rule W10b);
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Choose freely a point O on the line ma (rule WOnline2)
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Using the point Ha and the line a, construct a line ha (rule W10b);
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Choose freely a point A on the line ha (rule WOnline2)
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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) and the line a, construct a point C and a point B (rule W04);
% NDG: line a and circle k(O,C) intersect