绗?/p>
1
椤?/p>
鍏?/p>
18
椤?/p>
浜烘暀鐗堟暟瀛﹀叓骞寸骇涓婂唽鏈熸湯鑰冭瘯璇曞嵎
涓�銆侀�夋嫨椤岋紙鍏?/p>
10
灏忛锛屾瘡灏忛
3
鍒嗭紝鎬诲垎
30
鍒嗭級
1
锛庤嫢鍒嗗紡
鏈夋剰涔夛紝鍒?/p>
x
搴旀弧瓒崇殑鏉′欢鏄紙
锛?/p>
A
锛?/p>
x
鈮?/p>
0 B
锛?/p>
x
鈮?/p>
3 C
锛?/p>
x
鈮?/p>
3 D
锛?/p>
x
鈮?/p>
3
2
锛庤嫢涓嬪垪鍚勭粍鍊间唬琛ㄧ嚎娈电殑闀垮害锛岃兘缁勬垚涓夎褰㈢殑鏄紙
锛?/p>
A
锛?/p>
1
銆?/p>
2
銆?/p>
3.5
B
锛?/p>
4
銆?/p>
5
銆?/p>
9
C
锛?/p>
5
銆?/p>
15
銆?/p>
8 D
锛?/p>
20
銆?/p>
15
銆?/p>
8
3
锛庡鍥撅紝
AB=AD
锛?/p>
BC=CD
锛岄偅涔堝叏绛変笁瑙掑舰鐨勫鏁版槸锛?/p>
锛?/p>
A
锛?/p>
1
B
锛?/p>
2
C
锛?/p>
3
D
锛?/p>
4
4
锛庡鍥撅紝鍦ㄢ柍
ABC
涓紝鈭燙=90掳锛屸垹ABC=60掳锛?/p>
BD
骞冲垎鈭?/p>
ABC
锛岃嫢
AD=6
锛屽垯
CD
绛変簬锛?/p>
锛?/p>
A
锛?/p>
3
B
锛?/p>
4
C
锛?/p>
5
D
锛?/p>
6
5
锛庝笅鍒楄繍绠椾腑姝ｇ‘鐨勬槸锛?/p>
锛?/p>
A
锛庯紙
x
3
锛?/p>
2
=x
5
B
锛?/p>
2a
锕?/p>
5
鈥?/p>
a
3
=2a
8
C
锛?/p>
6x
3
梅锛堬梗
3x
2
锛?/p>
=2x D
锛?/p>
3
锕?/p>
2
=
6
锛?/p>
濡傚浘锛?/p>
宸茬煡鈭?/p>
1=
鈭?/p>
2
锛?/p>
瑕佸緱鍒扳柍
ABD
鈮屸柍
ACD
锛?/p>
杩橀渶浠庝笅鍒楁潯浠朵腑琛ラ�変竴涓紝
鍒欓敊璇殑閫夋硶鏄?/p>
锛?/p>
锛?/p>
A
锛?/p>
AB=AC
B
锛?/p>
DB=DC
C
锛庘垹
ADB=
鈭?/p>
ADC
D
锛庘垹
B=
鈭?/p>
C
7
锛庝笅鍒楀浘褰腑锛屼笉涓�瀹氭槸杞村绉板浘褰㈢殑鏄紙
锛?/p>
A
锛庣洿瑙掍笁瑙掑舰
B
锛庣嚎娈?/p>
C
锛庨挐瑙?/p>
D
锛庣瓑鑵颁笁瑙掑舰
