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

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

% DET: points C and H are not the same

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

% DET: points C and T_c are not the same

Using the point T_c and the line h_c, construct a line c (rule W10a);

Using the point H, the point C, the point T_c, the line s_c and the line h_c, construct a line CO (rule W17);

% NDG: points C and T_c are not the same points H and C are not the same

% DET: points C and T_c are not the same

Using the point E_c and the line CO, construct a line m(H_bH_a) (rule W16);

Using the line m(H_bH_a) and the line c, construct a point M_c (rule W03);

% NDG: lines m(H_bH_a) and c are not parallel

% DET: lines m(H_bH_a) and c are not the same

Using the point M_c and the point C, construct a point G (rule W01);

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

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

% NDG: points C and O are not the same

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

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