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

% DET: points C and T_a are not the same

Using the point T_a and the point I, construct a line s_a (rule W02);

% DET: points T_a and I 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 line b and the line s_a, construct a point A (rule W03);

% NDG: lines b and s_a are not parallel

% DET: lines b and s_a are not the same

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 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