309
鏁欒偛璧勬簮搴?/p>
www.309edu.com
309
鏁欒偛璧勬簮搴?/p>
www.309edu.com
17.2
鍕捐偂瀹氱悊鐨勯�嗗畾鐞?/p>
鈼?/p>
鍥為【褰掔撼
1
锛庡鏋溾柍
ABC
鐨勪笁杈归暱
a
锛?/p>
b
锛?/p>
c
婊¤冻
a
2
+b
2
=c
2
锛屽垯鈻?/p>
ABC
鏄?/p>
______
涓夎褰紝
_____=90掳
锛岃繖涓畾鐞嗗彨鍋?/p>
_______
锛?/p>
2
锛庝竴涓懡棰樻垚绔嬶紝閭ｄ箞瀹冪殑閫嗗懡棰?/p>
_______
鎴愮珛锛?/p>
鈼?/p>
璇惧爞娴嬫帶
娴嬭瘯鐐逛竴
鍕捐偂瀹氱悊鐨勯�嗗畾鐞?/p>
1
锛庡凡鐭モ柍
ABC
鐨勪笁杈归暱
a
锛?/p>
b
锛?/p>
c
鍒嗗埆涓?/p>
6
锛?/p>
8
锛?/p>
10
锛屽垯鈻?/p>
ABC______
锛堝～
鈥?/p>
鏄?/p>
鈥?/p>
鎴?/p>
鈥?/p>
涓嶆槸
鈥?/p>
锛夌洿瑙掍笁瑙掑舰锛?/p>
2
锛庘柍
ABC
涓紝
AB=7
锛?/p>
AC=24
锛?/p>
BC=25
锛屽垯鈭?/p>
A=______
锛?/p>
3
锛庘柍
ABC
鐨勪笁杈瑰垎鍒负涓嬪垪鍚勭粍鍊硷紝鍏朵腑涓嶆槸鐩磋涓夎褰笁杈圭殑鏄紙
锛?/p>
A
锛?/p>
a=41
锛?/p>
b=40
锛?/p>
c=9
B
锛?/p>
a=1.2
锛?/p>
b=1.6
锛?/p>
c=2
C
锛?/p>
a=
1
2
锛?/p>
b=
1
3
锛?/p>
c=
1
4
D
锛?/p>
a=
3
5
锛?/p>
b=
4
5
锛?/p>
c=1
4
锛?/p>
锛堝垎鏋愬垽鏂锛夊湪瑙ｇ瓟
鈥?/p>
鍒ゆ柇鐢遍暱涓?/p>
6
5
锛?/p>
2
锛?/p>
8
5
鐨勭嚎娈电粍鎴愮殑涓夎褰㈡槸涓嶆槸鐩磋
涓夎褰?/p>
鈥?/p>
涓�棰樹腑锛屽皬鏄庢槸杩欐牱鍋氱殑锛?/p>
瑙ｏ細璁?/p>
a=
6
5
锛?/p>
b=2
锛?/p>
c=
8
5
锛?/p>
鍥犱负
a
2
+b
2
=
锛?/p>
6
5
锛?/p>
2
+2
2
=
136
64
25
25
飩?
=c
2
锛?/p>
鎵�浠ョ敱
a
锛?/p>
b
锛?/p>
c
缁勬垚鐨勪笁瑙掑舰涓嶆槸鐩磋涓夎褰紝浣犺涓哄皬鏄庣殑瑙ｇ瓟姝ｇ‘鍚?/p>
鈥?/p>
璇疯鏄庣悊鐢憋紟
娴嬭瘯鐐逛簩
閫嗗懡棰樹笌閫嗗畾鐞?/p>
5
锛庝笅鍒楀悇鍛介閮芥垚绔嬶紝鍐欏嚭瀹冧滑鐨勯�嗗懡棰橈紝杩欎簺閫嗗懡棰樻垚绔嬪悧锛?/p>
锛?/p>
1
锛夊唴閿欒鐩哥瓑锛屼袱鐩寸嚎骞宠锛?/p>
锛?/p>
2
锛夊椤惰鐩哥瓑锛?/p>
锛?/p>
3
锛夊叏绛変笁瑙掑舰鐨勫搴旇鐩哥瓑锛?/p>
锛?/p>
4
锛夊鏋滀袱涓疄鏁扮浉绛夛紝閭ｄ箞瀹冧滑鐨勭粷瀵瑰�肩浉绛夛紟