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1
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鍏?/p>
5
椤?/p>
2019-2020
瀛﹀勾搴︾涓�瀛︽湡鍏勾绾ф暟瀛︽湡涓娴嬪嵎
棰樺彿
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浜?/p>
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鎬诲垎
璇勫垎
*
娉ㄦ剰浜嬮」锛?/p>
1
銆佸～鍐欑瓟棰樺崱鐨勫唴瀹圭敤
2B
閾呯瑪濉啓
2
銆佹彁鍓?/p>
xx
鍒嗛挓鏀跺彇绛旈鍗?/p>
绗?/p>
鈪?/p>
鍗?/p>
瀹㈣棰?/p>
绗厾鍗风殑娉ㄩ噴
闃呭嵎浜?/p>
涓�銆佸崟閫夐
锛堝叡
15
棰橈紱鍏?/p>
45
鍒嗭級
寰楀垎
1.
涓�涓笁瑙掑舰鐨勪袱杈归暱鏄?/p>
2cm
鍜?/p>
7cm
锛岀涓夎竟闀挎槸鍋舵暟锛屽垯杩欎釜涓夎褰㈢殑鍛ㄩ暱鏄?/p>
(
)
A. 15cm
B. 17cm
C. 16cm
鎴?/p>
18cm
D. 15cm
鎴?/p>
17cm
2.
濡傚浘锛屽湪
鈻?/p>
ABC
涓紝
鈭?/p>
C=90掳
锛?/p>
BD
骞冲垎
鈭?/p>
ABC
锛屼氦
AC
浜庣偣
D
锛涜嫢
DC=3
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AB=8
鍒?/p>
鈻?/p>
ABD
鐨勯潰绉槸
(
)
A. 8
B. 12
C. 16
D. 24
3.
涓嬪垪璇存硶涓紝閿欒鐨勬槸锛?/p>
锛?/p>
A.
姝ｅ杈瑰舰鐨勫悇杈归兘鐩哥瓑
B.
鍚勮竟閮界浉绛夌殑澶氳竟褰㈡槸姝ｅ杈瑰舰
C.
姝ｄ笁瑙掑舰鐨勪笁鏉¤竟閮界浉绛?/p>
D.
姝ｅ叚杈瑰舰鐨勫叚涓唴瑙掗兘鐩哥瓑
4.
宸茬煡涓夎褰笁杈归暱鍒嗗埆涓?/p>
2
锛?/p>
x
锛?/p>
5
锛岃嫢
x
涓烘暣鏁帮紝鍒欒繖鏍风殑涓夎褰釜鏁颁负锛?/p>
锛?/p>
A. 2
B. 3
C. 4
D. 5
5.
濡傚浘锛屽湪
鈻?/p>
ABC
涓紝
AB=AC
锛?/p>
BD
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鈭?/p>
ABC
鐨勫钩鍒嗙嚎锛岃嫢
鈭?/p>
A=50掳
锛屽垯
鈭?/p>
BDC=
锛?/p>
锛?/p>
A. 16掳
B. 82.5
C. 48掳
D. 60掳
6.
鎵嬪伐璇句笂锛屽皬鏄庣敤铻烘爴灏嗕袱绔墦鏈夊瓟鐨?/p>
5
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鐨勫舰鐘朵笉绋冲畾锛岀◢寰竴鍔ㄤ簲瑙掓槦灏卞彉褰簡锛庝簬鏄粬鎯冲湪鏈ㄦ潯浜ゅ弶鐐瑰鍐嶅姞涓婅嫢骞蹭釜铻烘爴锛屼娇鍏剁ǔ瀹氫笉鍐嶅彉
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锛?/p>
A. 1
涓?/p>
B. 2
涓?/p>
C. 3
涓?/p>
D. 4
涓?/p>
7.
涓�涓澶氳竟褰㈢殑姣忎釜澶栬閮芥槸
36
锛?/p>
杩欎釜姝ｅ杈瑰舰鏄紙
锛?/p>
A.
姝ｅ叚杈瑰舰
B.
姝ｅ叓杈瑰舰
C.
姝ｅ崄杈瑰舰
D.
姝ｅ崄浜岃竟褰?/p>
8.
绛夎叞涓夎褰㈢殑涓よ竟闀夸负
4
锛?/p>
9
锛屽垯瀹冪殑鍛ㄩ暱鏄紙
锛?/p>
A. 17
B. 17
鎴?/p>
22
C. 20
D. 22
9.
宸茬煡绛夎叞涓夎褰腑鐨勪竴鏉¤竟闀夸负
3cm
锛屽彟涓�鏉¤竟闀夸负
5cm
锛屽垯瀹冪殑鍛ㄩ暱涓?/p>
锛?/p>
锛?/p>
A. 11cm B. 12cm C. 13cm D. 11cm
鎴?/p>
13cm
10.
涓嬪垪鍙欒堪涓細
鈶?/p>
浠绘剰涓�涓笁瑙掑舰鐨勪笁鏉￠珮鑷冲皯鏈変竴鏉″湪姝や笁瑙掑舰鍐呴儴锛?/p>
鈶?/p>
浠?/p>
a
锛?/p>
b
锛?/p>
c
涓鸿竟锛?/p>
a
锛?/p>
b
锛?/p>
c
閮藉ぇ浜?/p>
0
锛屼笖
a+b
锛?/p>
c
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鈶?/p>
涓�涓笁瑙掑舰鍐呰涔嬫瘮涓?/p>
3
锛?/p>
2
锛?/p>
1
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鈶?/p>
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姝ｇ‘鐨勬湁锛?/p>
锛変釜锛?/p>
A. 1
B. 2
C. 3
D. 4
11.
鑻ヤ竴涓杈瑰舰鐨勬瘡涓唴瑙掗兘涓?/p>
135掳
锛屽垯瀹冪殑杈规暟涓猴紙
锛?/p>
A. 6 B. 8 C. 5 D. 10
12.
鐢ㄨ竟闀跨浉绛夌殑榛戣壊姝ｄ笁瑙掑舰涓庣櫧鑹叉鍏竟褰㈤暥宓屽浘妗堬紝鎸夊浘
鈶犫憽鈶?/p>
鎵�绀虹殑瑙勫緥渚濇涓嬪幓锛屽垯绗?/p>
n
涓浘妗?/p>
涓紝鎵�鍖呭惈鐨勯粦鑹叉涓夎褰㈠拰鐧借壊姝ｅ叚杈瑰舰鐨勪釜鏁版�诲拰鏄紙
锛?/p>
A. n
2
+4n+2 B. 6n+1 C. n
2
+3n+3 D. 2n+4