bgce
CEÓëBGµÄ´óС¹Øϵ
CE<BGÔÚÈý½ÇÐÎBDGÖнÇDBGСÓÚ½ÇBDG ËùÒÔDGСÓÚBG
Ö±Ïßbg,ceµÄ½»µã
C¡¢¡ßµãEÓëµãG£¬µãBÓëµãC¾ù¹ØÓÚÖ±ÏßAF¶Ô³Æ£¬¡àÖ±ÏßBG£¬CEµÄ½»µãÔÚAFÉÏ£¬¹Ê±¾Ñ¡ÏîÕýÈ·£»D¡¢¡ß¡÷DEFÓë¡÷DGF¹ØÓÚÖ±ÏßAF¶Ô³Æ£¬...
...BF´¹Ö±ÓÚAC½»ADÓÚG,ÇóÖ¤:ËıßÐÎBGCEΪÁâÐÎ
¡àËıßÐÎBGCEΪÁâÐÎ(¶Ô½ÇÏß´¹Ö±ÇÒÏ໥ƽ·Ö£©2¡¢AB=BC BCºÍAD²»´¹Ö± ËùÒÔËıßÐÎBGCEΪÁâÐβ»³ÉÁ¢
ËıßÐÎABCD¡¢ACFGÊÇÕý·½ÐÎ,EC¡¢BG½»ÓÚµãM,ÊÔ²ÂÏëBGÓë...
BG=CE Ö¤Ã÷£ºÒòΪABDEÊÇÕý·½ÐÎ ËùÒÔAE=AB ½ÇBAE=90¶È ÒòΪËıßÐÎACFGÊÇÕý·½ÐÎ ËùÒÔAC=AG ½ÇCAG=90...
Èý½ÇÐÎABCÖÐ,¡¡¡CEÓëBGÓÐʲôÊýÁ¿¹Øϵ²¢Ö¤Ã÷¡£
ÏÈÖ¤Ã÷½ÇCEF=½ÇCFE£¨ºÜºÃÖ¤Ã÷£©ËùÒÔCE=CF ¹ýF×öAC´¹Ïß½»ÓëH ¹ýG×öAB´¹Ïß½»ÓëI Ö¤Èý½ÇÐÎBGIÈ«µÈÓÚÈý½ÇÐÎCFH µÃBG=CF ÓÖCE=...
ÊÔ̽Ë÷GE,CE,BGÖ®¼äµÄÊýÁ¿¹Øϵ,²¢ËµÃ÷ÄãµÄ½áÂÛ,×¢Òâ:ÎÊÌâ...
(3)CE£¼BG.Ö¤Ã÷:Á¬½ÓCG,ÒòΪ¡÷BCDÊÇ µÈÑüÖ±½ÇÈý½ÇÐÎ ,ËùÒÔBD=CD,ÓÖHÊÇBC±ßµÄÖеã,ËùÒÔDH´¹Ö±Æ½·ÖBC.ËùÒÔBG=CG,ÔÚRt¡÷CEG...
Èçͼ,ÒÑÖªBGƽÐÐCE,Ôò½ÇA+½ÇB+½ÇC+½ÇD+½ÇE+½ÇGµÄ¶ÈÊýÊǶà ...
ÒòΪBGƽÐÐCE ËùÒÔ½ÇGMN+½ÇENM=180¶È ½ÇMGE+½ÇGEN=180¶È ½ÇGMN=½ÇDNC ½ÇBMN=½ÇMNE ÒòΪ½ÇBMN=½Ç...
ÔÚÈý½ÇÐÎABCµÄ±ßAB.ACÏòÐÎÍâ×öÕý·½ÐÎABEF.ACGH¡£BG.CE...
Ö¤Ã÷:¹ýA×÷AD¡ÍBC,ÑÓ³¤DAµ½K,ʹAK=BC,Á¬½ÓKB¡¢KC,·Ö±ð½»CE¡¢BGÓÚM¡¢N.¡ß¡ÏKAF+¡ÏDAB=90¶È,¡ÏABD+¡ÏDAB=90¶È,¡à¡ÏKAF...
СÕý·½ÐÎADGFµÄÃæ»ýΪ25,´óÕý·½ÐÎBGCEµÄÃæ»ýΪ81,ÇóÈý½ÇÐÎ...
£¨110+25+40.5£©-5¡Á14/2=140.5
...×÷Õý·½ÐÎABDEºÍACFG,Á¬½ÓBG.CEÇÒCE½»ABÓÚP
¡àBG¿É¿´³ÉÊÇÓÉECÈƵãAÄæʱÕë·½ÏòÐýת90¡ã¶øµÃµ½£¬¡àBG¡ÍCE¡£µÚ¶þ¸öÎÊÌ⣺ÏÔÈ»£¬ÔÚÐýת¡÷AEBʱ£¬ÎÞ...