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