Using the point E_b and the point H_b, construct a line h_b (rule W02);

% DET: points E_b and H_b are not the same

Using the point H_a and the point E_b, construct a circle k(E_b,B) (rule W06);

% NDG: points H_a and E_b are not the same

Using the circle k(E_b,B) and the line h_b, construct a point B and a point H (rule W04);

% NDG: line h_b and circle k(E_b,B) intersect

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

% DET: points H_a and B are not the same

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

% DET: points H_a and H are not the same

Using the point H_b and the line h_b, construct a line b (rule W10a);

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

% NDG: lines b and a are not parallel

% DET: lines b and a are not the same

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

% NDG: lines h_a and b are not parallel

% DET: lines h_a and b are not the same