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