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13
灏忛锛?/p>
20
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40
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.
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4
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9
4
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鐨勭珛鏂规牴涓猴紞
2.
2
锛庤绠楋細
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1
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12
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a
4
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锛?/p>
锛?/p>
2
锛?/p>
(
m
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2
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m
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2
n
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锛?/p>
锛?/p>
3
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2008
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8
(
125
.
0
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飩?/p>
=
.
3
锛庡湪鏁拌酱涓婁笌琛ㄧず
3
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.
4
锛庡鍥撅紝鈻?/p>
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38
飩?/p>
锛?/p>
BC
锛?/p>
6cm
锛?/p>
E
涓?/p>
BC
鐨勪腑鐐癸紝
骞崇Щ鈻?/p>
ABC
寰楀埌鈻?/p>
DEF
锛屽垯鈭?/p>
DEF
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飩?/p>
锛屽钩绉昏窛绂讳负
cm.
5
锛庢涔濊竟褰㈢粫瀹冪殑鏃嬭浆涓績鑷冲皯鏃嬭浆
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6
锛庡鍥撅紝
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ABCD
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鈻?/p>
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BC
鎵�鍦ㄧ洿绾垮绉帮紝
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F
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掳
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7
锛庡鍥撅紝鍦ㄦ鏂瑰舰
ABCD
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BC
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BCE
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,
鍒欌垹
CDE
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.
8
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鈻?/p>
ABCD
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ABC
鐨勫钩鍒嗙嚎浜?/p>
AD
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E
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DE
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1
锛屽垯
鈻?/p>
ABCD
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.
9
锛庡湪姊舰
ABCD
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BC
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A
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2
鈭?/p>
B
锛?/p>
4
鈭?/p>
C
锛屽垯鈭?/p>
D
鐨勫害鏁颁负
掳
.
10
锛庡鍥撅紝鍦ㄢ柍
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AB
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AC
锛?/p>
5
锛?/p>
BC
锛?/p>
6
锛岀偣
E
锛?/p>
F
鏄腑绾?/p>
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涓ょ偣锛屽垯鍥句腑闃村奖閮ㄥ垎鐨勯潰绉槸
.
11
锛庣洿瑙掍笁瑙掑舰涓夎竟闀垮垎鍒负
2
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3
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m
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m
锛?/p>
.
12
锛庣煩褰?/p>
ABCD
鐨勫懆闀夸负
24
锛岄潰绉负
32
锛屽垯鍏跺洓鏉¤竟鐨勫钩鏂瑰拰涓?/p>
.
13
锛庡湪
鍥涜竟褰?/p>
ABCD
涓紝瀵硅绾?/p>
AC
銆?/p>
BD
鐩镐氦浜庣偣
O
锛屽叾涓?/p>
AC
锛?/p>
BD
锛?/p>
28
锛?/p>
CD
锛?/p>
10.
锛?/p>
1
锛夎嫢鍥涜竟褰?/p>
ABCD
鏄钩琛屽洓杈瑰舰锛屽垯鈻?/p>
OCD
鐨勫懆闀夸负
锛?/p>
锛?/p>
2
锛夎嫢鍥涜竟褰?/p>
ABCD
鏄彵褰紝鍒欒彵褰㈢殑闈㈢Н涓?/p>
锛?/p>
锛?/p>
3
锛夎嫢鍥涜竟褰?/p>
ABCD
鏄煩褰紝鍒?/p>
AD
鐨勯暱涓?/p>
.
A
B
D
C
E
F
绗?/p>
4
棰?/p>
A
B
C
D
E
F
绗?/p>
6
棰?/p>
A
B
C
D
E
绗?/p>
8
棰?/p>
A
B
C
D
E
绗?/p>
7
棰?/p>
A
B
C
D
E
F
绗?/p>
10
棰?/p>