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

% DET: points C and H_a are not the same

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

% DET: points C and T_b are not the same

Using the point H_a and the line a, construct a line h_a (rule W10b);

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

% NDG: lines h_a and b are not parallel

% DET: lines h_a and b are not the same

Using the point A, the point C, the point T_b and the line b, construct a point T`_b (rule W19);

% NDG: points A and C are not the same points C and T_b are not the same points C and midpoint([A,T_b]) are not the same

Using the point T_b and the point T`<sub>b</sub>, construct a circle k_over(T<sub>b</sub>,T`_b) (rule W09);

% NDG: points T_b and T`_b are not the same

Using the circle k_over(T_b,T`_b) and the line a, construct a point B_wc and a point B (rule W04);

% NDG: line a and circle k_over(T_b,T`_b) intersect