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

% DET: points A and H_c are not the same

Using the point H_b and the line b, construct a line h_b (rule W10b);

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

% NDG: lines h_b and c are not parallel

% DET: lines h_b and c are not the same

Using the point H_c and the line c, construct a line h_c (rule W10b);

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