Using the point A and the point H_a, construct a line h_a (rule W02);

% DET: points A and H_a are not the same

Using the point H_a and the line h_a, construct a line a (rule W10a);

Using the point I and the line a, construct a circle k(I,P_a) (rule W11);

% NDG: point I is not incident to the line a

Using the circle k(I,P_a), the point A and the point I, construct a line c and a line b (rule W12);

% NDG: point A is outside the circle k(I,P_a)

Using the line c and the line a, construct a point B (rule W03);

% NDG: lines c and a are not parallel

% DET: lines c and a are not the same

Using the line a and the line b, construct a point C (rule W03);

% NDG: lines a and b are not parallel

% DET: lines a and b are not the same