$${\begin{cases} \frac{|EO|}{|OF|} = \frac{|AF'|}{|F'O'|} \\ \frac{|EO|}{|OF|} = \frac{|BO'|}{|O'F|} \\ \frac{|AF'|}{|F'D|} = \frac{|CF|}{|FD|} \\ \frac{|AF'|}{|F'D|} = \frac{|BO'|}{|O'D|} \end{cases}}$$