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Using the point C and the point Ta, construct a line a (rule W02);
% DET: points C and Ta 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 line a, the point Tb, the point C, the point Ta and the line b, construct a line sc (rule W17);
% NDG: points C and Ta are not the same points Tb and C are not the same
% DET: points C and Tb are not the same
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Using the point Tb, the point C and the point Ta, construct a circle circle[Ta,Tb,angle[s[a]][s[b]]] (rule W20);
% NDG: points Tb and C are not the same points C and Ta are not the same points Ta and Tb are not the same
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Using the circle circle[Ta,Tb,angle[s[a]][s[b]]] and the line sc, construct a point Csa and a point I (rule W04);
% NDG: line sc and circle circle[Ta,Tb,angle[s[a]][s[b]]] intersect
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Using the point I and the point Ta, construct a line sa (rule W02);
% DET: points I and Ta are not the same
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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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Using the line a and the line sb, construct a point B (rule W03);
% NDG: lines a and sb are not parallel
% DET: lines a and sb are not the same
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Using the line b and the line sa, construct a point A (rule W03);
% NDG: lines b and sa are not parallel
% DET: lines b and sa are not the same