Using the point A and the point M_b, construct a point C (rule W01);

Using the point A and the point M_b, construct a line b (rule W02);

% DET: points A and M_b are not the same

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

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

Using the circle k(I,P_a), the point A, the point I and the line b, construct a line c (rule W13);

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

Using the circle k(I,P_a), the point C, the point I and the line b, construct a line a (rule W13);

% NDG: point C 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