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Using the point C and the point Ma, construct a point B (rule W01);
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Using the point C and the point Ma, construct a line a (rule W02);
% DET: points C and Ma are not the same
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Using the point C and the point Tb, construct a line b (rule W02);
% DET: points C and Tb are not the same
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Using the point Tb and the line a, construct a circle k(Tb,foot[Tb,c]) (rule W11);
% NDG: point Tb is not incident to the line a
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Using the circle k(Tb,foot[Tb,c]), the point B, the point Tb and the line a, construct a line c (rule W13);
% NDG: point B is outside the circle k(Tb,foot[Tb,c])
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Using the line c and the line b, construct a point A (rule W03);
% NDG: lines c and b are not parallel
% DET: lines c and b are not the same