̽¾¿Ìâ
¢åСÃ÷ÔÚÍæ»ýľÓÎϷʱ£¬°ÑÈý¸öÕý·½Ðλýľ°Ú³ÉÒ»¶¨µÄÐÎ×´£¬ÕýÊÓͼÈçͼ¢Ù£¬
ÎÊÌ⣨1£©£ºÈô´ËÖеÄÈý½ÇÐΡ÷DEFΪֱ½ÇÈý½ÇÐΣ¬PµÄÃæ»ýΪ9£¬QµÄÃæ»ýΪ15£¬ÔòMµÄÃæ»ýΪ
24
24
£®
ÎÊÌ⣨2£©£ºÈôPµÄÃæ»ýΪ36cm2£¬QµÄÃæ»ýΪ64cm2£¬Í¬Ê±MµÄÃæ»ýΪ100cm2£¬Ôò¡÷DEFΪ
Ö±½Ç
Ö±½Ç
Èý½ÇÐΣ®
¢æͼÐα仯£ºÈçͼ¢Ú£¬·Ö±ðÒÔÖ±½Ç¡÷ABCµÄÈý±ßΪֱ¾¶ÏòÈý½ÇÐÎÍâ×÷Èý¸ö°ëÔ²£¬ÄãÄÜÕÒ³öÕâÈý¸ö°ëÔ²µÄÃæ»ýÖ®¼äÓÐʲô¹ØϵÂð£¿Çë˵Ã÷ÀíÓÉ£®
·ÖÎö£º£¨Ò»£©Ö±½Ó¸ù¾Ý¹´¹É¶¨Àí¼°Õý·½ÐεÄÐÔÖʽøÐнâ´ð£»
£¨¶þ£©¸ù¾Ý¹´¹É¶¨ÀíµÃ³öAB2=AC2+BC2£¬ÔÙ¸ù¾ÝÔ²µÄÃæ»ý¹«Ê½µÃ³öS1¡¢S2¡¢S3£®µÄ±í´ïʽ£¬ÕÒ³öÆäÖеĹØϵ¼´¿É£®
½â´ð£º½â£º£¨Ò»£©
£¨1£©MµÄÃæ»ýΪ£º24£®£¨1·Ö£©
£¨2£©¡÷DEFΪֱ½ÇÈý½ÇÐΣ®£¨1·Ö£©
£¨¶þ£©¡ß¡÷ABCÊÇÖ±½ÇÈý½ÇÐΣ¬
¡àAB2=AC2+BC2£¬
¡ßS1=
1
2
¦Ð•£¨
1
2
AC£©2=
1
8
¦ÐAC2£¬
S2=
1
2
¦Ð•£¨
1
2
BC£©2=
1
8
¦ÐBC2£¬
S3=
1
2
¦Ð•£¨
1
2
AB£©2=
1
8
¦ÐAB2£¬
¡àS1+S2=
1
8
¦ÐAC2+
1
8
¦ÐBC2
=
1
8
¦Ð£¨AC2+BC2£©
=
1
8
¦ÐAB2£®
¡àS1+S2=S3£®
µãÆÀ£º±¾Ì⿼²éµÄÊǹ´¹É¶¨Àí¼°Õý·½ÐεÄÐÔÖÊ¡¢Ô²µÄÃæ»ý¹«Ê½£¬ÊìÖª¹´¹É¶¨ÀíÊǽâ´ð´ËÌâµÄ¹Ø¼ü£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

ͬ²½Á·Ï°²á´ð°¸