鍒濅笁鏁板瀵掑亣浣滀笟绛旀
鍒濅笁鏁板瀵掑亣浣滀笟锛?/p>
涓�锛?/p>
1
銆?/p>
80
20
50
,50
飦?/p>
飦?/p>
飦?/p>
飦?/p>
锛?/p>
鎴?/p>
锛?/p>
2
銆?/p>
5
3
锛?/p>
3
銆?/p>
AC=BD
锛堜笉鍞竴锛?/p>
锛?/p>
4
銆?/p>
60
飦?
锛?/p>
5
銆?/p>
32
锛?/p>
6
銆?/p>
AC=BD
锛?/p>
7
銆?/p>
4
锛?/p>
8
銆?/p>
AB=CD
锛?/p>
9
銆?/p>
65
飦?
锛?/p>
10
銆佽瘉鏄庯細鍦ㄥ钩琛屽洓杈瑰舰
ABCD
涓紝鍒?/p>
AD=BC
锛屸垹
DAE=
鈭?/p>
BCF
锛?/p>
鍙?/p>
AE=CF
锛?/p>
鈭粹柍
ADE
鈮屸柍
CBF
锛?/p>
鈭?/p>
DE=BF
锛?/p>
鍚岀悊
BE=DF
锛?/p>
鈭村洓杈瑰舰
EBFD
鏄钩琛屽洓杈瑰舰锛?/p>
鈭粹垹
EBF=
鈭?/p>
FDE
锛?/p>
11
銆?/p>
锛?/p>
1
锛夆垹
EDC=
鈭?/p>
CAB=
鈭?/p>
DCA
锛屽垯
A
C
鈭?/p>
DE
锛?/p>
2
锛夌敱锛?/p>
1
锛夌煡鈭?/p>
ACE=90
掳
=
鈭?/p>
CFB
锛屽垯
E
C
鈭?/p>
BF
锛涙槗璇佲柍
DEC
鈮屸柍
AFB
锛屽垯
BF=CE
锛涢偅涔堝彲璇?/p>
骞宠鍥涜竟褰?/p>
BCEF
12
銆?/p>
锛?/p>
1
锛夋槗璇佲柍
AEF
鈮屸柍
DEC
锛屽垯
CD=AF=BD
锛?/p>
锛?/p>
2
锛夌煩褰?/p>
13
銆?/p>
锛?/p>
1
锛夎繃鐐?/p>
A
浣?/p>
AG
鈯?/p>
DC
锛屽垯鏄撳緱
DC=2=BC
锛?/p>
2
锛夌瓑鑵扮洿瑙掍笁瑙掑舰锛屾槗璇佲柍
DCE
鈮屸柍
BCF
锛?/p>
3
锛夋槗寰椻垹
BEF=90
掳锛?/p>
CE=CF=2BE
锛屽垯
EF=
2
2
BE
锛屽垯
BF=3BE
锛屽垯
1
sin
BFE=
3
飪?/p>
鍒濅笁鏁板瀵掑亣浣滀笟锛堜簩锛?/p>
1
銆?/p>
D
锛?/p>
2
銆?/p>
A
锛?/p>
3
銆?/p>
B
锛?/p>
4
銆?/p>
16
锛?/p>
5
銆?/p>
-6
锛?/p>
6
銆佷箼锛?/p>
7
銆?/p>
2
锛?/p>
8
銆?/p>
20
锛?/p>
9
銆?/p>
锛?/p>
1
锛?/p>
2
锛?/p>
锛?/p>
2
锛?/p>
-5
锛?/p>
10
銆?
1
+1
a
锛?/p>
2
2
锛?/p>
11
銆?/p>
锛?/p>
1
锛?/p>
12
锛?/p>
锛?/p>
2
锛?/p>
8
锛?/p>
12
銆?/p>
锛?/p>
1
锛変箼楂橈紝
锛?/p>
2
锛夌敳锛?/p>
13
銆?/p>