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 point H_c and the point M_b, construct a circle k(M_b,C) (rule W06);

% NDG: points H_c and M_b are not the same

Using the circle k(M_b,C), the line h_c, the point M_b and the point H_c, construct a point C (rule W05);

% NDG: line h_c and circle k(M_b,C) intersect

% DET: points H_c and C must be different

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

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

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

% DET: points H_c and A are not the same

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

% DET: points H and A are not the same

Using the circle k(M_b,C), the line h_a, the point M_b and the point A, construct a point H_a (rule W05);

% NDG: line h_a and circle k(M_b,C) intersect

% DET: points A and H_a must be different

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

% DET: points C and H_a are not the same

Using the line c and the line a, construct a point B (rule W03);

% NDG: lines c and a are not parallel

% DET: lines c and a are not the same