? Th !"#$% &'$()# *+)&,-./0$12 345)67 8%9&7 "&:-.;<$12 !=>?@$( 5AB$C( 0 47 D4=>#@( B= 0 47 D7 %E %FE F G / H ; I 0 47 0 31 47 ˆˆ == OO 0 21 180 ˆˆ =+OO B7 -B2 -J1K)L2 000 1 0 2 13347180 ˆ 180 ˆ =−=−=⇒ OO M17 !&%7 0 24 133 ˆˆ == OO -B2 "&N-.;0$12-J(A5,O$;E2 "=>?FFE%%EPPELQ45GJR% )# FE % P F %E PE G : H / ; I , 41 ˆˆ OO = 52 ˆˆ oo = 63 ˆˆ oo = ' ˆ ' ˆ zOxzOx = xOyxOy ˆ '' ˆ = yOzyOz ˆ '' ˆ = 0 180' ˆ ' ˆ ' ˆ === zOzyOyxOx "& .;0$12-J(A5S2 T)&$ !$ =1U 0 70 "&V-.;0$12-J(AS2 T)&$ !UFW%!FEW%EXFW% JR%U1U % %E F F W Y"&HZ-.;0$12-J(AS2 !K[\]T Y"&7*=^_-`a]b)'c2 *FG%%GP3K)L" !&%%dPe 0 45 ˆ = yOx 0000 180.;135.;90.;45. DCBA )fXFd%)#)A7 0000 180.;135.;90.;45. DCBA )fX%dP)#)A7 0000 180.;135.;90.;45. DCBA J=X]gK7 0 JO(%) 0 85)I,:N-NI0$)2 0DO=X)7J=>?U . D7 %E %FE F G / H ; I 0 47 0 31 47 ˆˆ == OO 0 21 180 ˆˆ =+OO B7 -B 2 -J1K)L2 000 1 0 2 13347180 ˆ 180 ˆ =−=−=⇒ OO M17 !&%7 0 24 133 ˆˆ == OO -B 2 "&N-.;0$ 12- J(A5,O$;E2 "=>?FFE%%EPPELQ45GJR% )# FE % P F %E PE G : H / ; I , 41 ˆˆ OO = 52 ˆˆ oo = 63 ˆˆ oo = ' ˆ ' ˆ zOxzOx = xOyxOy ˆ '' ˆ = yOzyOz ˆ '' ˆ = 0 180' ˆ ' ˆ ' ˆ === zOzyOyxOx . .;0$ 12- J(A5S 2 T)&$ !$ =1U 0 70 "&V-.;0$ 12- J(AS 2 T)&$ !UFW%!FEW%EXFW% JR%U1U % %E F F W . "&V-.;0$ 12- J(AS 2 T)&$ !UFW%!FEW%EXFW% JR%U1U % %E F F W Y"&HZ-.;0$ 12- J(AS 2 !K[]T Y"&7*=^_-`a]b)'c 2 *FG%%GP3K)L" !&%%dPe 0 45 ˆ = yOx 0000 180.;135.;90.;45.