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

% DET: points H_c and H are not the same

Using the point H_a and the line h_a, construct a line a (rule W10a);

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

% NDG: lines a and h_c are not parallel

% DET: lines a and h_c are not the same

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

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

% NDG: lines c and h_a are not parallel

% DET: lines c and h_a are not the same

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

% NDG: lines a and c are not parallel

% DET: lines a and c are not the same