Using the point C and the point M_a, construct a point B (rule W01);

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

% DET: points C and M_a are not the same

Using the point E_a and the point M_a, construct a line m(H_bH_c) (rule W02);

% DET: points E_a and M_a are not the same

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

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

% NDG: lines h_a and a are not parallel

% DET: lines h_a and a are not the same

Using the point C and the point H_a, construct a line m(CH_a) (rule W14);

% DET: points C and H_a are not the same

Using the point E_a and the point M_a, construct a line m(E_aM_a) (rule W14);

% DET: points E_a and M_a are not the same

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

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

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

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(CH_a), construct a point M_b and a point E_c (rule W04);

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

Using the point M_b and the point C, construct a point A (rule W01);