1
/
9
C
F
B
E
D
A
骞宠鍥涜竟褰?/p>
涓�銆佺煡璇嗘⒊鐞?/p>
1
锛庡钩琛屽洓杈瑰舰锛?/p>
(1)
骞宠鍥涜竟褰㈢殑瀹氫箟锛氫袱缁勫杈瑰垎鍒钩琛岀殑鍥涜竟褰㈡槸骞宠鍥涜竟褰紟骞宠鍥涜竟褰㈢敤绗﹀彿鈥?/p>
鈥濊〃
绀猴紟骞宠鍥涜竟褰?/p>
ABCD
璁颁綔
锛岃浣滃钩琛屽洓杈瑰舰
ABCD
锛?/p>
2
锛庡钩琛屽洓杈瑰舰鐨勬�ц川锛?/p>
(1)
骞宠鍥涜竟褰㈢殑瀵硅竟骞宠涓旂浉绛夛紟
(2)
锛庡钩琛屽洓杈瑰舰鐨勫瑙掔浉绛夛紝閭昏浜掕ˉ銆?/p>
(3)
骞宠鍥涜竟褰㈢殑瀵硅绾夸簰鐩稿钩鍒嗭紟
(4)
鑻ヤ竴鏉＄洿绾胯繃骞宠鍥涜竟褰袱瀵硅绾跨殑浜ょ偣锛屽垯杩欑洿绾胯涓�缁勫杈规埅涓嬬殑绾挎浠ュ瑙掔嚎鐨勪氦鐐逛负涓?/p>
鐐癸紝涓旇繖鏉＄洿绾夸簩绛夊垎骞宠鍥涜竟褰㈢殑闈㈢Н锛?/p>
渚?/p>
1
锛?/p>
ABCD
涓紝鈭?/p>
A
鐨勫钩鍒嗙嚎鍒?/p>
BC
鎴?/p>
4cm
鍜?/p>
3cm
涓ゆ潯绾挎锛?/p>
鍒?/p>
ABCD
鐨勫懆闀夸负
锛?/p>
渚?/p>
2
锛庡湪
ABCD
涓紝鈭?/p>
C=60
潞
,DE
鈯?/p>
AB
浜?/p>
E,DF
鈯?/p>
BC
浜?/p>
F
锛?/p>
锛?/p>
1
锛夊垯鈭?/p>
EDF=
锛?/p>
锛?/p>
2
锛夊鍥撅紝鑻?/p>
AE=4
锛?/p>
CF=7
锛?/p>
鍒?/p>
ABCD
鍛ㄩ暱
=
;
渚?/p>
3
.
鍦ㄥ钩琛屽洓杈瑰舰
ABCD
涓紝宸茬煡鈭?/p>
A
锛?/p>
40
掳锛屽垯鈭?/p>
B
锛?/p>
锛屸垹
C
锛?/p>
锛屸垹
D
锛?/p>
.
渚?/p>
4.
.
涓紝鍛ㄩ暱涓?/p>
20cm
锛屽瑙掔嚎
AC
浜?/p>
BD
浜庣偣
O
锛屸柍
OAB
姣斺柍
OBC
鐨勫懆闀垮
4
锛屽垯杈?/p>
AB
锛?/p>
____________
锛?/p>
BC
锛?/p>
____________
锛?/p>
鍙樺紡璁粌
.
濡傚浘锛屽湪骞宠鍥涜竟褰?/p>
ABCD
涓紝宸茬煡瀵硅绾?/p>
AC
鍜?/p>
BD
鐩镐氦浜庣偣
O
锛屛?/p>
AOB
鐨勫懆闀夸负
15
锛?/p>
AB
锛?/p>
6
锛岄偅涔堝
瑙掔嚎
AC
鍜?/p>
BD
鐨勫拰鏄灏戯紵
渚?/p>
5.
濡傚浘锛屽湪
鈻BCD
涓紝
O
鏄瑙掔嚎鐨勪氦鐐癸紝杩?/p>
O
鐨勭洿绾夸氦
AB
浜?/p>
E
锛屼氦
DC
浜?/p>
F
锛屽浘涓叏绛変笁瑙掑舰鍏辨湁
锛?/p>
锛?/p>
A
锛?/p>
2
瀵?/p>
B
锛?/p>
3
瀵?/p>
C
锛?/p>
6
瀵?/p>
D
锛?/p>
8
瀵?/p>
3
锛庝袱鏉″钩琛岀嚎闂寸殑璺濈锛?/p>
(1)
瀹氫箟锛氫袱鏉″钩琛岀嚎涓紝涓�鏉＄洿绾夸笂鐨勪换鎰忎竴鐐瑰埌鍙︿竴鏉＄洿绾跨殑璺濈锛?
鍙仛杩欎袱鏉″钩琛岀嚎闂寸殑璺濈锛?/p>
(2)
涓ゅ钩琛岀嚎闂寸殑璺濈澶勫鐩哥瓑锛?/p>
渚?/p>
6
銆佹湁浠ヤ笅鍥涗釜璇存硶锛?/p>
鈶犱袱鐐圭殑璺濈锛岀偣鍒扮洿绾跨殑璺濈锛屼袱鏉″钩琛岀嚎闂寸殑璺濈锛岄兘鏄寚鏌愮绾挎鐨勯暱锛?/p>
鈶″鏋滀袱鐐圭殑浣嶇疆鍥哄畾锛岄偅涔堝畠浠殑璺濈鏄畾鍊硷紟
鈶㈠鏋滀竴鐐瑰拰涓�鏉＄洿绾跨殑浣嶇疆鍥哄畾锛岄偅涔堝畠浠殑璺濈鏄畾鍊硷紟
鈶ｄ袱鏉″钩琛岀嚎闂寸殑璺濈涓嶆槸瀹氬�?/p>
鍏朵腑姝ｇ‘璇存硶鐨勪釜鏁版槸
锛?/p>
锛?/p>
A
锛?/p>
1
B
锛?/p>
2
C
锛?/p>
3
D
锛?/p>
4
O
F
E
D
C
B
A