ÌâÄ¿ÄÚÈÝ
£¨±¾Ìâ¹²7·Ö£©Èç¹ûÒ»¸öµãÓëÁíÍâÁ½¸öµãÄܹ¹³ÉÖ±½ÇÈý½ÇÐΣ¬Ôò³ÆÕâ¸öµãΪÁíÍâÁ½¸öµãµÄ¹´¹Éµã£®ÀýÈ磺¾ØÐÎABCDÖУ¬µãCÓëA¡¢BÁ½µã¿É¹¹³ÉÖ±½ÇÈý½ÇÐÎABC£¬Ôò³ÆµãCΪA¡¢BÁ½µãµÄ¹´¹Éµã£¬Í¬Ñù£¬µãDÒ²ÊÇA¡¢BÁ½µãµÄ¹´¹Éµã£®
£¨1£©Èçͼ1£¬¾ØÐÎABCDÖУ¬AB =2£¬BC =1£¬ÇëÔÚ±ßCDÉÏ×÷³öA¡¢BÁ½µãµÄ¹´¹Éµã£¨µãCºÍµãD³ýÍ⣩£®£¨ÒªÇ󣺳߹æ×÷ͼ£¬±£Áô×÷ͼºÛ¼££¬²»ÒªÇóд×÷·¨£©
![]()
£¨2£©Èçͼ2£¬¾ØÐÎABCDÖУ¬ÈôAB =3£¬BC =1£¬µãPÔÚ±ßCDÉÏ£¨µãCºÍµãD³ýÍ⣩£¬ÇÒµãPΪA¡¢BÁ½µãµÄ¹´¹Éµã£¬ÇóDPµÄ³¤£®
![]()
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿