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

% DET: points A and T_b are not the same

Using the point A and the point T_c, construct a line c (rule W02);

% DET: points A and T_c are not the same

Using the line b, the point T_c, the point A, the point T_b and the line c, construct a line s_a (rule W17);

% NDG: points A and T_b are not the same points T_c and A are not the same

% DET: points A and T_c are not the same

Using the point T_c, the point A and the point T_b, construct a circle circle[T_b,T_c,angle[s[b]][s[c]]] (rule W20);

% NDG: points T_c and A are not the same points A and T_b are not the same points T_b and T_c are not the same

Using the circle circle[T_b,T_c,angle[s[b]][s[c]]] and the line s_a, construct a point A_sa and a point I (rule W04);

% NDG: line s_a and circle circle[T_b,T_c,angle[s[b]][s[c]]] intersect

Using the point I and the point T_b, construct a line s_b (rule W02);

% DET: points I and T_b are not the same

Using the point T_c and the point I, construct a line s_c (rule W02);

% DET: points T_c and I are not the same

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

% NDG: lines b and s_c are not parallel

% DET: lines b and s_c are not the same

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

% NDG: lines c and s_b are not parallel

% DET: lines c and s_b are not the same