- 1 -
19.3
姊舰鍚屾娴嬭瘯棰?/p>
涓�銆侀�夋嫨棰?/p>
1.
绛夎叞姊舰涓娿�佷笅搴曞樊绛変簬涓�鑵扮殑闀匡紝閭ｄ箞鑵伴暱涓庝笅搴曠殑澶硅鏄紙
锛?/p>
.
A.5掳
B.60掳
.45掳
D.30掳
2.
绛夎叞姊舰鐨勯珮鏄叞闀跨殑涓�鍗?/p>
,
鍒欏簳瑙掍负锛?/p>
锛?/p>
.
A.30掳
B.45掳
C.60掳
D.90掳
3.
涓嬪垪鍛介涓紝鐪熷懡棰樻槸锛?/p>
锛?/p>
.
A.
鏈変竴缁勫杈瑰钩琛岋紝鍙︿竴缁勫杈圭浉绛夌殑姊舰鏄瓑鑵版褰?/p>
B.
鏈変竴缁勫瑙掍簰琛ョ殑姊舰鏄瓑鑵版褰?/p>
C.
鏈変竴缁勯偦瑙掔浉绛夌殑鍥涜竟褰㈡槸绛夎叞姊舰
D.
鏈変袱缁勯偦瑙掑垎鍒浉绛夌殑鍥涜竟褰㈡槸绛夎叞姊舰
4.
濡傚浘
1,
鍦ㄧ瓑鑵版褰?/p>
ABCD
涓?/p>
,AD=6cm,BD=9cm,AB=8cm,E
銆?/p>
F
銆?/p>
G
銆?/p>
H
鍒嗗埆鏄?/p>
AD
銆?/p>
BD
銆?/p>
BC
銆?/p>
AC
鐨勪腑鐐癸紝閭ｄ箞鍥涜竟褰?/p>
EFGH
鐨勫懆闀挎槸锛?/p>
锛?/p>
.
A.14cm
B.15cm
C.16cm
D.17cm
鍥?/p>
1
鍥?/p>
2
鍥?/p>
3
5.
濡傚浘
2,
绛夎叞姊舰
ABCD,
鍛ㄩ暱涓?/p>
40,
鈭?/p>
BAD=60掳
,BD
骞冲垎鈭?/p>
ABC,
鍒?/p>
CD
鐨勯暱涓猴紙
锛?/p>
.
A.4
B.5
C.8
D.10
6.
涓嬪垪鍥涜竟褰腑锛屼袱鏉″瑙掔嚎涓�瀹氫笉鐩哥瓑
锛庯紟锛?/p>
鐨勬槸锛?/p>
锛?/p>
.
A.
姝ｆ柟褰?/p>
B.
鐭╁舰
C.
绛夎叞姊舰
D.
鐩磋姊舰
7
锛庡鍥?/p>
3,
绛夎叞姊舰
ABCD
涓紝
AB
鈭?/p>
DC
锛?/p>
AD=BC=8
锛?/p>
AB=10
锛?/p>
CD=6
锛屽垯姊舰
ABCD
鐨勯潰
绉槸锛?/p>
锛?/p>
.
A.
15
16
B.
5
16
C.
15
32
D.
17
16
8.
鍦ㄤ笅鍒楀浘褰腑锛屾部鐫�铏氱嚎灏嗛暱鏂瑰舰鍓垚涓ら儴鍒嗭紝閭ｄ箞鐢辫繖涓ら儴鍒嗘棦鑳芥嫾鎴愬钩琛屽洓杈瑰舰锛屽張
鑳芥嫾鎴愪笁瑙掑舰鍜屾褰㈢殑鏄?/p>
锛?/p>
锛?/p>
.
A
B
C
D
9.
鍦ㄦ褰?/p>
ABCD
涓紝
AB
鈭?/p>
CD
锛?/p>
AB>CD
锛屽鏋溾垹
D>
鈭?/p>
C
锛?/p>
閭ｄ箞
AD
鍜?/p>
BC
鐨勫叧绯绘槸锛?/p>
锛?/p>
A
.
AD>BC B
.
AD=BC C
.
AD<BC D
.
涓嶈兘纭畾
10.
鑵版褰袱搴曚箣宸殑涓�鍗婄瓑浜庡畠鐨勯珮锛岄偅涔堟姊舰鐨勪竴涓簳瑙掓槸锛?/p>
锛?/p>
A
.
30
掳
B
.
45
掳
C
.
60
掳
D
.
75
掳