What is x?

[Jurbbeidbwufjebrb]

I can not find out how to solve this can i get help with finding X?

 

[pka]

I can not find out how to solve this can i get help with finding X?

I assume that $x=\|\overline{AO}\|$.
Can you see that $\Delta AOB \approx \Delta COD~?$
It seems to me there is some bit of information missing.

$$$$$$

 

[lev888]

I assume that $x=\|\overline{AO}\|$.
Can you see that $\Delta AOB \approx \Delta COD~?$
It seems to me there is some bit of information missing.

$$$$$$

There is not enough info to "fix" the shape, but enough to find x - the relationship derived from the triangle similarity remains if the overall shape changes.