Length of the diagonal of an irregular Quadrilateral, knowing 4 sides and a diagonal

[Tham]

How do you calculate the length of a diagonal of an irregular Quadrilateral , if you know
1) the lengths of the 4 sides and
2) the length of one diagonal
Thanks
Tham

 

[Deleted member 4993]

How do you calculate the length of a diagonal of an irregular Quadrilateral , if you know
1) the lengths of the 4 sides and
2) the length of one diagonal
Thanks
Tham

The easiest way is to - draw it - using compass and ruler.

 

[tkhunny]

Does it make a difference if it is concave or convex?