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Using the point B and the point Tc, construct a line c (rule W02);
% DET: points B and Tc 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 I and the line c, construct a circle k(I,Pa) (rule W11);
% NDG: point I is not incident to the line c
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Using the circle k(I,Pa), the point B, the point I and the line c, construct a line a (rule W13);
% NDG: point B is outside the circle k(I,Pa)
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Using the line a and the line sc, construct a point C (rule W03);
% NDG: lines a and sc are not parallel
% DET: lines a and sc are not the same
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Using the circle k(I,Pa), the point C, the point I and the line a, construct a line b (rule W13);
% NDG: point C is outside the circle k(I,Pa)
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Using the line b and the line c, construct a point A (rule W03);
% NDG: lines b and c are not parallel
% DET: lines b and c are not the same