E
D
C
A
B
F
绛夎叞涓夎褰€�佺洿瑙掍笁瑙掑舰缁煎悎缁冧範棰?/p>
绛夎叞涓夎褰㈢殑鎬ц川
涓�銆侀�夋嫨棰?/p>
1
锛庣瓑鑵颁笁瑙掑舰鐨勫绉拌酱鏄紙
锛?/p>
A
锛庨《瑙掔殑骞冲垎绾?/p>
B
锛庡簳杈逛笂鐨勯珮
C
锛庡簳杈逛笂鐨勪腑绾?/p>
D
锛庡簳杈逛笂鐨勯珮鎵�鍦ㄧ殑鐩寸嚎
2
锛庣瓑鑵颁笁瑙掑舰鏈変袱鏉¤竟闀夸负
4cm
鍜?/p>
9cm
锛屽垯璇ヤ笁瑙掑舰鐨勫懆闀挎槸锛?/p>
锛?/p>
A
锛?/p>
17cm B
锛?/p>
22cm C
锛?/p>
17cm
鎴?/p>
22cm D
锛?/p>
18cm
3
锛庣瓑鑵颁笁瑙掑舰鐨勯《瑙掓槸
80
掳锛屽垯涓�鑵颁笂鐨勯珮涓庡簳杈圭殑澶硅鏄紙
锛?/p>
A
锛?/p>
40
掳
B
锛?/p>
50
掳
C
锛?/p>
60
掳
D
锛?/p>
30
掳
4
锛庣瓑鑵颁笁瑙掑舰鐨勪竴涓瑙掓槸
80
掳锛屽垯鍏跺簳瑙掓槸锛?/p>
锛?/p>
A
锛?/p>
100
掳
B
锛?/p>
100
掳鎴?/p>
40
掳
C
锛?/p>
40
掳
D
锛?/p>
80
掳
5
锛庡鍥撅紝
C
銆?/p>
E
鍜?/p>
B
銆?/p>
D
銆?/p>
F
鍒嗗埆鍦ㄢ垹
GAH
鐨勪袱杈逛笂锛屼笖
AB=BC=CD=DE=EF
锛岃嫢鈭?/p>
A=18
掳锛屽垯鈭?/p>
GEF
鐨勫害鏁版槸锛?/p>
锛?/p>
A
锛?/p>
80
掳
B
锛?/p>
90
掳
C
锛?/p>
100
掳
D
锛?/p>
108
掳
E
D
C
A
B
H
F
G
浜屻�佸～绌洪
6
锛庣瓑鑵扳柍
ABC
鐨勫簳瑙掓槸
60
掳锛屽垯椤惰鏄?/p>
________
搴︼紟
7
锛庣瓑鑵颁笁瑙掑舰鈥滀笁绾垮悎涓�鈥濇槸鎸?/p>
___________
锛?/p>
8
锛庣瓑鑵颁笁瑙掑舰鐨勯《瑙掓槸
n
掳锛屽垯涓や釜搴曡鐨勮骞冲垎绾挎墍澶圭殑閽濊鏄?/p>
_________
锛?/p>
9
锛庡鍥撅紝鈻?/p>
ABC
涓?/p>
AB=AC
锛?/p>
EB=BD=DC=CF
锛屸垹
A=40
掳锛屽垯鈭?/p>
EDF鈥?/p>
鐨勫害鏁版槸
_____
锛?/p>
10
锛庘柍
ABC
涓紝
AB=AC
锛庣偣
D
鍦?/p>
BC
杈逛笂
锛?/p>
1
锛夆埖
AD
骞冲垎鈭?/p>
BAC
锛屸埓
_______=________
锛?/p>
________
鈯?/p>
_________
锛?/p>
锛?/p>
2
锛夆埖
AD
鏄腑绾匡紝鈭粹垹
________=
鈭?/p>
________
锛?/p>
________
鈯?/p>
________
锛?/p>
锛?/p>
3
锛夆埖
AD
鈯?/p>
BC
锛屸埓鈭?/p>
________=
鈭?/p>
_______
锛?/p>
_______=_______
锛?/p>
涓夈�佽В绛旈
11
锛庡凡鐭モ柍
ABC
涓?/p>
AB=AC
锛?/p>
AD
鈯?/p>
BC
浜?/p>
D
锛岃嫢鈻?/p>
ABC
銆佲柍
ABD
鐨勫懆闀垮垎鍒槸
20cm
鍜?/p>
16cm
锛?/p>
鈥?/p>
姹?/p>
AD
鐨勯暱锛?/p>
12
锛庡鍥撅紝鍦ㄥ洓杈瑰舰
ABCD
涓紝
AB=AD
锛?/p>
CB=CD
锛屾眰璇侊細鈭?/p>
ABC=
鈭?/p>
ADC.