Find the missing side length, x.
A
18-18
12
A
20
12
B
The value of the missing side length labeled as x is
ghts reserved.
![Find the missing side length x A 1818 12 A 20 12 B The value of the missing side length labeled as x is ghts reserved class=](https://us-static.z-dn.net/files/dc3/262c02de85b3637139afdcb2a31d7f9b.png)