hi i need to try and find the missing angles of this shape:

i know one andgle is 121 so would the angle opposite be 121?

ifso would i then add then together to get 242

then 360-242=118 then 118/2=59?

and both angles would be 59 because they are the same on each side????

if this is wrong could you please help but if its right could you also let me know!

Thanks