Èçͼ1, ¾ØÐÎÌúƬABCDÖУ¬AD="8," AB="4;" ΪÁËÒªÈÃÌúƬÄÜ´©¹ýÖ±¾¶Îª3.8µÄÔ²¿×, Ðè¶ÔÌúƬ½øÐд¦Àí (¹æ¶¨ÌúƬÓëÔ²¿×ÓнӴ¥Ê±ÌúƬ²»ÄÜ´©¹ýÔ²¿×).
(1)Ö±½Óд³ö¾ØÐÎÌúƬABCDµÄÃæ»ý £»
(2)Èçͼ2, M¡¢N¡¢P¡¢Q·Ö±ðÊÇAD¡¢AB¡¢BC¡¢CDµÄÖеã,½«¾ØÐÎÌúƬµÄËĸö½ÇÈ¥µô.
¢ÙÖ¤Ã÷ËıßÐÎMNPQÊÇÁâÐΣ»
¢ÚÇëÄãͨ¹ý¼ÆËã˵Ã÷ËıßÐÎÌúƬMNPQÄÜ´©¹ýÔ²¿×.
(3)Èçͼ3, ¹ý¾ØÐÎÌúƬABCDµÄÖÐÐÄ×÷Ò»ÌõÖ±Ï߷ֱ𽻱ßBC¡¢ADÓÚµãE¡¢F(²»Óë¶ËµãÖغÏ), ÑØ×ÅÕâÌõÖ±Ïß½«¾ØÐÎÌúƬÇиî³ÉÁ½¸öÈ«µÈµÄÖ±½ÇÌÝÐÎÌúƬ.µ±BE=DF=1ʱ,ÅжÏÖ±½ÇÌÝÐÎÌúƬEBAFÄÜ·ñ´©¹ýÔ²¿×, ²¢ËµÃ÷ÀíÓÉ.
£¨1£© 32
£¨2£©¢Ù M¡¢N¡¢P¡¢Q·Ö±ðÊÇAD¡¢AB¡¢BC¡¢CDµÄÖе㣬MN=NP=PQ=QM=
ËıßÐÎMNPQÊÇÁâÐÎ
¢Ú Èçͼ£¬¹ýµãM×÷MG¡ÍNPÓÚµãG
=16 MG=3.8
´ËʱÌúƬÄÜ´©¹ýÔ²¿×
£¨3£© Èçͼ£¬¹ýµãA×÷AH¡ÍEFÓÚµãH, ¹ýµãE×÷EK¡ÍADÓÚµãK ÏÔÈ»AB=4>3.8£¬
¹ÊÑØ×ÅÓëAB´¹Ö±µÄ·½ÏòÎÞ·¨´©¹ýÔ²¿×
¹ýµãA×÷EFµÄƽÐÐÏßRS£¬¹ÊÖ»Ðè¼ÆËãÖ±ÏßRSÓëEFÖ®¼äµÄ¾àÀë¼´¿É
BE="AK=1," EK=AB=4£¬AF=7 KF=6, EF=
¡ÏAHF=¡ÏEKF=90¡ã£¬¡ÏAFH=¡ÏEFK ¡÷AHF¡×¡÷EKF
¿ÉµÃAH=3.8 Ö±½ÇÌÝÐÎÌúƬ²»ÄÜ´©¹ýÔ²¿×
½âÎö
Ä꼶 | ¸ßÖÐ¿Î³Ì | Ä꼶 | ³õÖÐ¿Î³Ì |
¸ßÒ» | ¸ßÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ | ³õÒ» | ³õÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ |
¸ß¶þ | ¸ß¶þÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õ¶þ | ³õ¶þÃâ·Ñ¿Î³ÌÍƼö£¡ |
¸ßÈý | ¸ßÈýÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õÈý | ³õÈýÃâ·Ñ¿Î³ÌÍƼö£¡ |
¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º2011-2012ѧÄ긣½¨Ê¡ÓÀ´ºÏؾÅÄ꼶ÉÏѧÆÚÆÚÄ©ÊýѧÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ
Èçͼ1, ¾ØÐÎÌúƬABCDÖУ¬AD=8, AB=4; ΪÁËÒªÈÃÌúƬÄÜ´©¹ýÖ±¾¶Îª3.8µÄÔ²¿×, Ðè¶ÔÌúƬ½øÐд¦Àí (¹æ¶¨ÌúƬÓëÔ²¿×ÓнӴ¥Ê±ÌúƬ²»ÄÜ´©¹ýÔ²¿×).
(1)Ö±½Óд³ö¾ØÐÎÌúƬABCDµÄÃæ»ý £»
(2)Èçͼ2, M¡¢N¡¢P¡¢Q·Ö±ðÊÇAD¡¢AB¡¢BC¡¢CDµÄÖеã,½«¾ØÐÎÌúƬµÄËĸö½ÇÈ¥µô.
¢Ù Ö¤Ã÷ËıßÐÎMNPQÊÇÁâÐΣ»
¢ÚÇëÄãͨ¹ý¼ÆËã˵Ã÷ËıßÐÎÌúƬMNPQÄÜ´©¹ýÔ²¿×.
(3)Èçͼ3, ¹ý¾ØÐÎÌúƬABCDµÄÖÐÐÄ×÷Ò»ÌõÖ±Ï߷ֱ𽻱ßBC¡¢ADÓÚµãE¡¢F(²»Óë¶ËµãÖغÏ), ÑØ×ÅÕâÌõÖ±Ïß½«¾ØÐÎÌúƬÇиî³ÉÁ½¸öÈ«µÈµÄÖ±½ÇÌÝÐÎÌúƬ.µ±BE=DF=1ʱ,ÅжÏÖ±½ÇÌÝÐÎÌúƬEBAFÄÜ·ñ´©¹ýÔ²¿×, ²¢ËµÃ÷ÀíÓÉ.
²é¿´´ð°¸ºÍ½âÎö>>
°Ù¶ÈÖÂÐÅ - Á·Ï°²áÁбí - ÊÔÌâÁбí
ºþ±±Ê¡»¥ÁªÍøÎ¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨Æ½Ì¨ | ÍøÉÏÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | µçÐÅթƾٱ¨×¨Çø | ÉæÀúÊ·ÐéÎÞÖ÷ÒåÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | ÉæÆóÇÖȨ¾Ù±¨×¨Çø
Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com