ÌâÄ¿ÄÚÈÝ

ÔĶÁ²ÄÁÏ£ºÐ¡ÅÖͬѧ·¢ÏÖÕâÑùÒ»¸ö¹æÂÉ£ºÁ½¸ö¶¥½ÇÏàµÈµÄµÈÑüÈý½ÇÐΣ¬Èç¹û¾ßÓй«¹²µÄ¶¥½ÇµÄ¶¥µã£¬²¢°ÑËüÃǵĵ׽Ƕ¥µãÁ¬½ÓÆðÀ´ÔòÐγÉÒ»×éÐýתȫµÈµÄÈý½ÇÐΣ®Ð¡ÅְѾßÓÐÕâ¸ö¹æÂɵÄͼÐγÆΪ¡°ÊÖÀ­ÊÖ¡±Í¼ÐΣ®Èçͼ1£¬ÔÚ¡°ÊÖÀ­ÊÖ¡±Í¼ÐÎÖУ¬Ð¡ÅÖ·¢ÏÖÈô¡ÏBAC£½¡ÏDAE£¬AB£½AC£¬AD£½AE£¬ÔòBD£½CE£®

(1)ÔÚͼ1ÖÐÖ¤Ã÷СÅֵķ¢ÏÖ£»

½èÖúСÅÖͬѧ×ܽá¹æÂÉ£¬¹¹Ôì¡°ÊÖÀ­ÊÖ¡±Í¼ÐÎÀ´½â´ðÏÂÃæµÄÎÊÌ⣺

(2)Èçͼ2£¬AB£½BC£¬¡ÏABC£½¡ÏBDC£½60¡ã£¬ÇóÖ¤£ºAD+CD£½BD£»

(3)Èçͼ3£¬ÔÚ¡÷ABCÖУ¬AB£½AC£¬¡ÏBAC£½m¡ã£¬µãEΪ¡÷ABCÍâÒ»µã£¬µãDΪBCÖе㣬¡ÏEBC£½¡ÏACF£¬ED¡ÍFD£¬Çó¡ÏEAFµÄ¶ÈÊý£¨Óú¬ÓÐmµÄʽ×Ó±íʾ£©£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø