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

% NDG: points H_a and E_c are not the same

Using the circle k(E_c,C) and the line h_c, construct a point C and a point H (rule W04);

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

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

% DET: points H_a and C 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_c and the line h_c, construct a line c (rule W10a);

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

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

% NDG: lines h_a and c are not parallel

% DET: lines h_a and c are not the same