Language: Chinese (Simplified)
Day: 1
2015c710F, (ÏÊ
111 1 KKK. ···‚¡²¡þ˜‡k•:8S´²ï, XJéS ¥?¿ü‡ØÓ:A, B, Ñ•3S ¥˜
:C, ÷vAC = BC. ·‚¡S´Ã¥%, XJéS¥?¿n‡ØÓ:A, B, C, ÑØ•3S¥ ˜:P ,
÷vP A = P B = P C.
(a) y²: éz‡ên > 3, þ•3˜‡dn‡:¤²ï:8.
(b) (½¤kên > 3, ¦•3˜‡dn‡:¤²ï…Ã¥%:8.
111 2 KKK. (((½¤knê|(a, b, c), ¦
ab − c, bc − a, ca − b
¥z‡êÑ´2•˜.
(2•˜´•/X2
n
ê, Ù¥n´˜‡šKê.)
111 3 KKK. 333bn/ABC¥, AB > AC. Γ´§, H´§R%, F ´dº:A?¤Úp
Rv. M´>BC¥:. Q´Γþ˜:, ¦∠HQA = 90
◦
, K´Γþ˜:, ¦∠HKQ = 90
◦
. ®•
:A, B, C, K, Qp؃Ó, …Ud^Sü3Γþ.
y²: n/KQHÚn/F KM ƒƒ.
Language: Chinese(Simplified) žm: 4 ž 30 ©
zK 7 ©
