Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
angle or corner =
1.
‘½
2.
Šp
3.
–å
4.
‘g
ƒŒƒxƒ‹2.
•ÏX
SDAL“‡‰pŒêŠwZ