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

% DET: points M_c and H_c are not the same

Choose freely a point B on the line c (rule WOnline1)

Using the point B and the point M_c, construct a point A (rule W01);

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

Choose freely a point C on the line h_c (rule WOnline2)