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

% DET: points A and T_c are not the same

Using the point A and the point O, construct a circle k(O,C) (rule W06);

% NDG: points A and O are not the same

Using the circle k(O,C), the line c, the point O and the point A, construct a point B (rule W05);

% NDG: line c and circle k(O,C) intersect

% DET: points A and B must be different

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

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 circle k(O,C) and the line m_c, construct a point N_c and a point N_ck (rule W04);

% NDG: line m_c and circle k(O,C) intersect

Using the point N_c and the point T_c, construct a line s_c (rule W02);

% DET: points N_c and T_c are not the same

Using the circle k(O,C), the line s_c, the point O and the point N_c, construct a point C (rule W05);

% NDG: line s_c and circle k(O,C) intersect

% DET: points N_c and C must be different