9 9
.X.
XX.
XXX
Answer - small letters indicate angles
Vectors:
(1, 2)
(-2, 2)
18:
   K     R
 JKK   GRR   T
JJKkKFGGRRRqTT
JJJBFFGGGHQQTTT
 ABBFFFEHHQQQS
AABBBDEEHHHPSS
AAACDDEEEOPPSSS
 ICCDDDNOOPPPY
IICCCLNNOOOXYY
IIIMLLNNNWXXYYY
 UMmLLLVWWXxX
UUMMM VVWWW
UUU   VVV
