Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
angle or corner =
1.
Šp
2.
‰æ
3.
“š
4.
“d
ƒŒƒxƒ‹2.
•ÏX
SDAL“‡‰pŒêŠwZ