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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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Choose freely a point B on the line sb (rule WOnline1)
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Using the point B and the point I, construct a line m(BI) (rule W14);
% DET: points B and I are not the same
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Choose freely a point A (rule free)
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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 A and the point Tb, construct a line b (rule W02);
% DET: points A and Tb 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 m(BI), construct a point Nc (rule W03);
% NDG: lines mc and m(BI) are not parallel
% DET: lines mc and m(BI) are not the same
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Using the point Nc and the point I, construct a line sc (rule W02);
% DET: points Nc and I are not the same
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Using the line b and the line sc, construct a point C (rule W03);
% NDG: lines b and sc are not parallel
% DET: lines b and sc are not the same