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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 point Tc and the point I, construct a line sc (rule W02);
% DET: points Tc and I are not the same
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Using the point Tb, the point I and the point Tc, construct a circle circle[Tb,Tc,angle[c][b]] (rule W20);
% NDG: points Tb and I are not the same points I and Tc are not the same points Tb and Tc are not the same
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Using the point Tb, the point I and the point Tc, construct a circle circle[Tc,I,angle[c][s[a]]] (rule W20);
% NDG: points Tb and I are not the same points I and Tc are not the same points Tc and I are not the same
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Using the circle circle[Tc,I,angle[c][s[a]]] and the circle circle[Tb,Tc,angle[c][b]], construct a point Ac2 and a point A (rule W07);
% NDG: circles circle[Tc,I,angle[c][s[a]]] and circle[Tb,Tc,angle[c][b]] intersect
% DET: circles circle[Tc,I,angle[c][s[a]]] and circle[Tb,Tc,angle[c][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 Tc and the point A, construct a line c (rule W02);
% DET: points Tc and A are not the same
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Using the line sb and the line c, construct a point B (rule W03);
% NDG: lines sb and c are not parallel
% DET: lines sb and c are not the same
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Using the line sc and the line b, construct a point C (rule W03);
% NDG: lines sc and b are not parallel
% DET: lines sc and b are not the same