The quadrilateral is not given. Given are only the lengths of its sides and the length of $EF$.
Now you have to reassemble this quadrilateral. You can imagine as some sticks which are appart of each other and you have to get them together.
The quadrilateral is not given. Given are only the lengths of its sides and the length of $EF$.
Now you have to reassemble this quadrilateral. You can imagine as some sticks which are appart of each other and you have to get them together.