Using the point H_b and the point T_b, construct a line b (rule W02);

% DET: points H_b and T_b are not the same

Using the point H_b and the line b, construct a line h_b (rule W10b);

Choose freely a point B on the line h_b (rule WOnline2)

Using the point B and the point T_b, construct a line s_b (rule W02);

% DET: points B and T_b are not the same

Using the point H_b, the point B, the point T_b, the line s_b and the line h_b, construct a line BO (rule W17);

% NDG: points B and T_b are not the same points H_b and B are not the same

% DET: points B and T_b are not the same

Choose freely a point A on the line b (rule WOnline1)

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

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

% DET: points A and B are not the same

Using the point M_c and the line c, construct a line m_c (rule W10b);

Using the line m_c and the line BO, construct a point O (rule W03);

% NDG: lines m_c and BO are not parallel

% DET: lines m_c and BO 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 b, the point O and the point A, construct a point C (rule W05);

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

% DET: points A and C must be different