Using the point A and the point B, construct a point M_c (rule W01);

Using the point A and the point B, construct a line c (rule W02);

% DET: points A and B are not the same

Using the point N and the point M_c, construct a line m(H_aH_b) (rule W02);

% DET: points N and M_c are not the same

Using the point A and the point M_c, construct a circle k(M_c,A) (rule W06);

% NDG: points A and M_c are not the same

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

% NDG: points M_c and N are not the same

Using the circle k(N,M_a), the line c, the point N and the point M_c, construct a point H_c (rule W05);

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

% DET: points M_c and H_c must be different

Using the circle k(N,M_a), the line m(H_aH_b), the point N and the point M_c, construct a point E_c (rule W05a);

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

% DET: points M_c and E_c must be different

Using the point E_c and the point H_c, construct a line h_c (rule W02);

% DET: points E_c and H_c are not the same

Using the circle k(M_c,A) and the circle k(N,M_a), construct a point H_b and a point H_a (rule W07);

% NDG: circles k(M_c,A) and k(N,M_a) intersect

% DET: circles k(M_c,A) and k(N,M_a) are not the same

Using the point A and the point H_b, construct a line b (rule W02);

% DET: points A and H_b are not the same

Using the line h_c and the line b, construct a point C (rule W03);

% NDG: lines h_c and b are not parallel

% DET: lines h_c and b are not the same