Using the point E_c and the point M_c, construct a line m(H_bH_a) (rule W02);

% DET: points E_c and M_c are not the same

Using the point M_c and the point O, construct a line m_c (rule W02);

% DET: points M_c and O are not the same

Using the point M_c and the line m_c, construct a line c (rule W10a);

Using the point E_c and the point M_c, construct a line m(E_cM_c) (rule W14);

% DET: points E_c and M_c are not the same

Using the line m(E_cM_c) and the line m(H_bH_a), construct a point N (rule W03);

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

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

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

Using the point M_c and the point G, construct a point C (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