Using the point C and the point M_a, construct a point B (rule W01);

Using the point C and the point M_a, construct a line a (rule W02);

% DET: points C and M_a are not the same

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 C, the point I and the line a, construct a line b (rule W13);

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

Using the circle k(I,P_a), 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,P_a)

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