Using the point O and the point M_c, construct a line m_c (rule W02);

% DET: points O and M_c are not the same

Using the point M_c and the line m_c, construct a line c (rule W10a);

Choose freely a point A on the line c (rule WOnline2)

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

Choose freely a point C on the circle k(O,C) (rule WOncircle)