Using the point B and the point H, construct a point E_b (rule W01);

Using the point B and the point H, construct a line h_b (rule W02);

% DET: points B and H are not the same

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

% DET: points B and T_b are not the same

Using the point T_b and the line h_b, construct a line b (rule W10a);

Using the point H, the point B, the point T_b, the line s_b and the line h_b, construct a line BO (rule W17);

% NDG: points B and T_b are not the same points H and B are not the same

% DET: points B and T_b are not the same

Using the point E_b and the line BO, construct a line m(H_aH_c) (rule W16);

Using the line m(H_aH_c) and the line b, construct a point M_b (rule W03);

% NDG: lines m(H_aH_c) and b are not parallel

% DET: lines m(H_aH_c) and b are not the same

Using the point M_b and the point B, construct a point G (rule W01);

Using the point H and the point G, construct a point O (rule W01);

Using the point B and the point O, construct a circle k(O,C) (rule W06);

% NDG: points B and O are not the same

Using the circle k(O,C) and the line b, construct a point C and a point A (rule W04);

% NDG: line b and circle k(O,C) intersect