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

% DET: points H and H_c are not the same

Choose freely a point E_c on the line h_c (rule WOnline1)

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

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

% NDG: points H and E_c are not the same

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

Choose freely a point A on the line c (rule WOnline2)

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

% DET: points A and H are not the same

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

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

% DET: points H 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