Using the point E_a and the point H, construct a point A (rule W01);

Using the point E_a and the point H, construct a line h_a (rule W02);

% DET: points E_a and H are not the same

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

% DET: points T_a and A are not the same

Using the point T_a and the line h_a, construct a line a (rule W10a);

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

% NDG: lines a and h_a are not parallel

% DET: lines a and h_a are not the same

Using the point H and the point H_a, construct a line m(HH_a) (rule W14);

% DET: points H and H_a are not the same

Using the point E_a, the point A, the point T_a, the line s_a and the line h_a, construct a line AO (rule W17);

% NDG: points A and T_a are not the same points E_a and A are not the same

% DET: points A and T_a are not the same

Using the point E_a and the line AO, construct a line m(H_bH_c) (rule W16);

Using the line m(H_bH_c) and the line a, construct a point M_a (rule W03);

% NDG: lines m(H_bH_c) and a are not parallel

% DET: lines m(H_bH_c) and a are not the same

Using the point M_a and the point A, construct a point G (rule W01);

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

Using the point E_a and the point N, construct a circle k(N,M_a) (rule W06);

% NDG: points E_a and N are not the same

Using the circle k(N,M_a) and the line m(HH_a), construct a point E_b and a point E_c (rule W04);

% NDG: line m(HH_a) and circle k(N,M_a) intersect

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

Using the point H and the point E_c, construct a point C (rule W01);