绗崄鍏珷
骞宠鍥涜竟褰?/p>
18.1.2
骞宠鍥涜竟褰㈢殑鍒ゅ畾
绗?/p>
2
璇炬椂
骞宠鍥涜竟褰㈢殑鍒ゅ畾锛?/p>
2
锛?/p>
瀛︿範鐩爣
锛?/p>
1.
鎺屾彙鈥滀竴缁勫杈瑰钩琛屼笖鐩哥瓑鐨勫洓杈瑰舰鏄钩琛屽洓杈瑰舰鈥濈殑鍒?/p>
瀹氭柟娉?/p>
.
2.
浼氳繘琛屽钩琛屽洓杈瑰舰鐨勬�ц川涓庡垽瀹氱殑缁煎悎杩愮敤
.
閲嶇偣
锛氣�滀竴缁勫杈瑰钩琛屼笖鐩哥瓑鐨勫洓杈瑰舰鏄钩琛屽洓杈瑰舰鈥濈殑鍒ゅ畾鏂规硶
.
闅剧偣
锛氬钩琛屽洓杈瑰舰鐨勬�ц川涓庡垽瀹氱殑缁煎悎杩愮敤
.
涓�銆佺煡璇嗗洖椤?/p>
1.
涓婅妭璇炬垜浠涔犱簡鍒ゅ畾涓�涓洓杈瑰舰涓哄钩琛屽洓杈瑰舰鐨勬柟娉曟湁鍝嚑绉嶏紵
涓�銆佽鐐规帰绌?/p>
鎺㈢┒鐐?/p>
1
锛氫竴缁勫杈瑰钩琛屼笖鐩哥瓑鐨勫洓杈瑰舰鏄钩琛屽洓杈瑰舰
鎯充竴鎯?/p>
鎴戜滑鐭ラ亾锛?/p>
涓ょ粍瀵瑰垎鍒钩琛屾垨鐩哥瓑鐨勬槸骞宠鍥涜竟褰?/p>
.
濡傛灉鍙�冭檻
鍥涜竟褰㈢殑涓�缁勫杈癸紝瀹冧滑婊¤冻浠�涔堟潯浠舵椂杩欎釜鍥涜竟褰㈣兘鎴愪负骞宠鍥涜竟褰?/p>
鍛紵瀵逛簬杩欎釜闂锛屾湁浠ヤ笅涓ょ鐚滄兂锛?/p>
鐚滄兂
1
锛氫竴缁勫杈圭浉绛夌殑鍥涜竟褰㈡槸骞宠鍥涜竟褰紱
鐚滄兂
2
锛氫竴缁勫杈瑰钩琛岀殑鍥涜竟褰㈡槸骞宠鍥涜竟褰?/p>
.
杩欎袱绉嶇寽鎯冲鍚楋紵濡傛灉涓?/p>
瀵癸紝浣犺兘涓惧嚭鍙嶄緥鍚楋紵
娲诲姩
濡傚浘锛屽皢绾挎
AB
鍚戝彸骞崇Щ
BC
闀垮害鍚庡緱鍒扮嚎娈?/p>
CD
锛岃繛鎺?/p>
AD
锛?/p>
BC
锛?/p>
鐢辨浣犺兘鐚滄兂鍥涜竟褰?/p>
ABCD
鐨勫舰鐘跺悧锛?/p>
鐚滀竴鐚?/p>
缁忓巻浜嗕笂闈㈢殑娲诲姩锛屼綘鐜板湪鑳界寽鍑猴紝涓�缁勫杈规弧瓒充粈涔堟潯浠剁殑鍥?/p>
杈瑰舰鏄钩琛屽洓杈瑰舰鍚楋紵
涓�缁勫杈瑰钩
__________________
鐨勫洓杈瑰舰鏄钩琛屽洓杈瑰舰
.
璇佷竴璇?/p>
濡傚浘锛屽湪鍥涜竟褰?/p>
ABCD
涓紝
AB=CD
涓?/p>
AB
鈭?/p>
CD
锛?/p>
姹傝瘉锛氬洓杈瑰舰
ABCD
鏄钩琛屽洓杈瑰舰
.
璇佹槑锛氳繛鎺?/p>
AC.
鈭?/p>
AB
鈭?/p>
CD
锛?/p>
鈭粹垹
1=
鈭?/p>
2.
鍦ㄢ柍
ABC
鍜屸柍
CDA
涓?/p>
,
AB=CD
锛?/p>
鈭?/p>
1=
鈭?/p>
2
锛?/p>
鈭粹柍
ABC_____
鈻?/p>
CDA(________).
AC=CA
锛?/p>
鈭?/p>
BC=DA.
鍙堚埖
AB= CD,
鈭村洓杈瑰舰
ABCD
鏄?/p>
________________.
瑕佺偣褰掔撼锛?/p>
骞宠鍥涜竟褰㈢殑鍒ゅ畾瀹氱悊锛氫竴缁勫杈?/p>
________________
鐨勫洓杈?/p>
褰㈡槸骞宠鍥涜竟褰?/p>
.
鍑犱綍璇█鎻忚堪锛氬湪鍥涜竟褰?/p>
ABCD
涓紝鈭?/p>
AB
鈭?/p>
CD,AB=CD,
鈭村洓杈瑰舰
ABCD
鏄钩琛屽洓杈瑰舰
.
鍏镐緥绮炬瀽
渚?/p>
1
濡傚浘锛岀偣
A
锛?/p>
B
锛?/p>
C
锛?/p>
D
鍦ㄥ悓涓�鏉＄洿绾夸笂锛岀偣
E
锛?/p>
F
鍒嗗埆鍦ㄧ洿绾?/p>
AD
鐨勪袱渚э紝
AE=DF
锛屸垹
A=
鈭?/p>
D
锛?/p>
AB=DC
锛庢眰
璇侊細鍥涜竟褰?/p>
BFCE
鏄钩琛屽洓杈瑰舰锛?/p>
璇惧爞鎺㈢┒
鑷富瀛︿範
鏁欏澶囨敞
2.
鎺㈢┒鐐?/p>
1
鏂?/p>
鐭ヨ鎺?/p>
锛?/p>
瑙?/p>
骞?/p>
鐏?/p>
鐗?/p>
5-14
锛?/p>
鏁欏澶囨敞
瀛?/p>
鐢?/p>
鍦?/p>
璇?/p>
鍓?
瀹?/p>
鎴?/p>
鑷?/p>
涓?/p>
瀛?
涔犻儴鍒?/p>
閰嶅
PPT
璁?
鎺?/p>
1.
鎯呮櫙寮曞叆
锛?/p>
瑙?/p>
骞?/p>
鐏?/p>
鐗?/p>
3-4
锛?/p>
2.
鎺㈢┒鐐?/p>
1
鏂?/p>
鐭ヨ鎺?/p>
锛?/p>
瑙?/p>
骞?/p>
鐏?/p>
鐗?/p>
5-14
锛?/p>