ÎÒÃǹ涨£ºÈôµãOÊÇÏ߶ÎMN4Öе㣬Ôò³ÆµãM¹ØÓÚO4¶Ô³ÆµãÊÇN£¨»ò³ÆµãMÓëµãN¹ØÓÚO³ÉÖÐÐĶԳƣ©£»ÈôÖ±ÏßnÊÇÏ߶ÎMN4´¹Ö±Æ½·ÖÏߣ¬Ôò³ÆµãM¹ØÓÚn4¶Ô³ÆµãÊÇN£¨»ò³ÆµãMÓëµãN¹ØÓÚn³ÉÖá¶Ô³Æ£©£¬ÈçͼÏÖÓÐʯͷAºÍʯͷͼ¹ØÓÚÖñ¸Íl¶Ô³Æ£¬Ê¯Í·AºÍʯͷͼÏà¾à20cmÒ»Ö»µç×ÓÇàÍÜλÓÚµãP£¬ÓëʯͷAÏà¾à10cm£¬ÓëÖñ¸ÍlÏà¾à30cm£¬Ëû°´ÕÕÈçÏÂÖ¸ÁîÌø¶¯£ºµÚÒ»ÌøÂäµãÓÚP1£¬PÓëP1¹ØÓÚµãA³ÉÖÐÐĶԳƣ»µÚ¶þÌøÂäµãÓÚPÈË£¬PÈËÓëP1¹ØÓÚÖñ¸Íl³ÉÖá¶Ô³Æ£»µÚÈýÌøÂäµãÓÚP3£¬P3ÓëPÈ˹ØÓÚµãͼ³ÉÖÐÐĶԳƣ»µÚ
¾«Ó¢¼Ò½ÌÍø
ËÄÌøÂäµãÓÚP4£¬P4ÓëP3¹ØÓÚÖñ¸Íl³ÉÖá¶Ô³Æ£»ÒÔ´ËÔ¾ÏÂÈ¥£¬ÈôÿÈË5Ìø¿ÉÒÔÐÝÏ¢Ò»´Î£®
£¨1£©»­³öÕâÖ»µç×ÓÇàÍÜÇ°ËÄÌøÔ˶¯4·Ïßͼ£¬²¢ÇóµãP4ÓëµãP14¾àÀ루²»Ðë˵Ã÷ÀíÓÉ£©
£¨ÈË£©Çóµç×ÓÇàÍܵÚÈý´ÎÐÝÏ¢µãÓëµãP4¾àÀ룮

¾«Ó¢¼Ò½ÌÍø
£¨1£©ÈçͼËùʾ£º
¡ßµãP4ÓëPÖغϣ¬
¡àµãP4ÓëµãP1µÄ¾àÀëÊÇ60cm+60cm=120cm£¬

£¨2£©25¡Â4=6¡­1£¬µÚÒ»´ÎÐÝÏ¢µãÔÚP1£¬
25¡Â4=6¡­1£¬µÚ¶þ´ÎÐÝÏ¢µãÔÚP2£¬
25¡Â4=6¡­1£¬µÚÈý´ÎÐÝÏ¢µãÔÚP3£¬
¼´P3ÓëµãPµÄ¾àÀëÊÇ30cm+30cm=60cm£®
´ð£ºµç×ÓÇàÍܵÚÈý´ÎÐÝÏ¢µãÓëµãPµÄ¾àÀëÊÇ60cm£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

ÏÈÔĶÁ¶ÌÎÄ£¬ÔÙ½â´ð¶ÌÎĺóÃæµÄÎÊÌ⣮
¹æ¶¨ÁË·½ÏòµÄÏ߶γÆΪÓÐÏòÏ߶Σ®±ÈÈ磬¶ÔÓÚÏ߶ÎAB£¬¹æ¶¨ÒÔAΪÆðµã£¬BΪÖյ㣬±ã¿ÉµÃµ½Ò»Ìõ´ÓAµ½BµÄÓÐÏòÏ߶Σ®ÎªÇ¿µ÷Æä·½Ïò£¬ÎÒÃÇÔÚÆäÖÕµãB´¦»­ÉϼýÍ·£¨ÈçÏÂͼ-1£©£®ÒÔAΪÆðµã£¬BΪÖÕµãµÄÓÐÏòÏ߶μÇΪ
AB
£¨Æðµã×ÖĸAдÔÚÇ°Ã棬ÖÕµã×ÖĸBдÔÚºóÃ棩£®Ï߶ÎABµÄ³¤¶È½Ð×öÓÐÏòÏßABµÄ³¤¶È£¨»òÄ££©£¬¼ÇΪ|
AB
|£®ÏÔÈ»£¬ÓÐÏòÏ߶Î
AB
ºÍÓÐÏòÏ߶Î
BA
³¤¶ÈÏàͬ£®·½Ïò²»Í¬£¬ËüÃDz»ÊÇͬһÌõÓÐÏòÏ߶Σ®
¶ÔÓÚͬһƽÃæÄÚµÄÓÐÏòÏ߶Σ¬ÎÒÃÇ¿ÉÒÔÔÚ¸ÃƽÃ潨Á¢Ö±½Ç×ø±êϵ½øÐÐÑо¿£¨Ò»°ãÇé¿ö£¬Ö±½Ç×ø±êϵµÄµ¥Î»³¤¶ÈÓëÓÐÏòÏ߶εĵ¥Î»³¤¶ÈÏàͬ£©£®±ÈÈ磬ÒÔ×ø±êÔ­µãO£¨0£¬0£©ÎªÆðµã£¬P£¨3£¬0£©ÎªÖÕµãµÄÓÐÏòÏ߶Î
OP
£¬Æä·½ÏòÓëxÖáÕý·½ÏòÏàͬ£¬³¤¶È£¨»òÄ££©ÊÇ|
OP
|=3£®
ÎÊÌ⣺
£¨1£©ÔÚÈçͼËùʾµÄƽÃæÖ±½Ç×ø±êϵÖл­³ö
OA
ÓÐÏòÏ߶Σ¬Ê¹µÃ
OA
=3
2
£¬
OA
ÓëxÖáÕý°ëÖáµÄ¼Ð½ÇÊÇ45¡ã£¬ÇÒÓëyÖáµÄ¸º°ëÖáµÄ¼Ð½ÇÊÇ45¡ã£»
£¨2£©ÈôÓÐÏòÏ߶Î
OB
µÄÖÕµãBµÄ×ø±êΪ£¨3£¬
3
£©£¬ÊÔÇó³öËüµÄÄ£¼°ËüÓëxÖáÕý°ëÖáµÄ¼Ð½Ç£»
£¨3£©ÈôµãM¡¢A¡¢PÔÚͬһֱÏßÉÏ£¬|
MA
|+|
AP
|=|
MP
|
³ÉÁ¢Âð£¿ÊÔ»­³öʾÒâͼ¼ÓÒÔ˵Ã÷£®£¨Ê¾Òâͼ¿ÉÒÔ²»»­ÔÚƽÃæÖ±½Ç×ø±êϵÖУ©
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

ÎÒÃǹ涨£ºÈôµãOÊÇÏ߶ÎMNµÄÖе㣬Ôò³ÆµãM¹ØÓÚOµÄ¶Ô³ÆµãÊÇN£¨»ò³ÆµãMÓëµãN¹ØÓÚO³ÉÖÐÐĶԳƣ©£»ÈôÖ±ÏßnÊÇÏ߶ÎMNµÄ´¹Ö±Æ½·ÖÏߣ¬Ôò³ÆµãM¹ØÓÚnµÄ¶Ô³ÆµãÊÇN£¨»ò³ÆµãMÓëµãN¹ØÓÚn³ÉÖá¶Ô³Æ£©£¬ÈçͼÏÖÓÐʯͷAºÍʯͷB¹ØÓÚÖñ¸Íl¶Ô³Æ£¬Ê¯Í·AºÍʯͷBÏà¾à80cmÒ»Ö»µç×ÓÇàÍÜλÓÚµãP£¬ÓëʯͷAÏà¾à60cm£¬ÓëÖñ¸ÍlÏà¾à30cm£¬Ëû°´ÕÕÈçÏÂÖ¸ÁîÌø¶¯£ºµÚÒ»ÌøÂäµãÓÚP1£¬PÓëP1¹ØÓÚµãA³ÉÖÐÐĶԳƣ»µÚ¶þÌøÂäµãÓÚP2£¬P2ÓëP1¹ØÓÚÖñ¸Íl³ÉÖá¶Ô³Æ£»µÚÈýÌøÂäµãÓÚP3£¬P3ÓëP2¹ØÓÚµãB³ÉÖÐÐĶԳƣ»µÚËÄÌøÂäµãÓÚP4£¬P4ÓëP3¹ØÓÚÖñ¸Íl³ÉÖá¶Ô³Æ£»ÒÔ´ËÔ¾ÏÂÈ¥£¬Èôÿ25Ìø¿ÉÒÔÐÝÏ¢Ò»´Î£®
£¨1£©»­³öÕâÖ»µç×ÓÇàÍÜÇ°ËÄÌøÔ˶¯µÄ·Ïßͼ£¬²¢ÇóµãP4ÓëµãP1µÄ¾àÀ루²»Ðë˵Ã÷ÀíÓÉ£©
£¨2£©Çóµç×ÓÇàÍܵÚÈý´ÎÐÝÏ¢µãÓëµãPµÄ¾àÀ룮

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º½â´ðÌâ

ÎÒÃǹ涨£ºÈôµãOÊÇÏ߶ÎMNµÄÖе㣬Ôò³ÆµãM¹ØÓÚOµÄ¶Ô³ÆµãÊÇN£¨»ò³ÆµãMÓëµãN¹ØÓÚO³ÉÖÐÐĶԳƣ©£»ÈôÖ±ÏßnÊÇÏ߶ÎMNµÄ´¹Ö±Æ½·ÖÏߣ¬Ôò³ÆµãM¹ØÓÚnµÄ¶Ô³ÆµãÊÇN£¨»ò³ÆµãMÓëµãN¹ØÓÚn³ÉÖá¶Ô³Æ£©£¬ÈçͼÏÖÓÐʯͷAºÍʯͷB¹ØÓÚÖñ¸Íl¶Ô³Æ£¬Ê¯Í·AºÍʯͷBÏà¾à80cmÒ»Ö»µç×ÓÇàÍÜλÓÚµãP£¬ÓëʯͷAÏà¾à60cm£¬ÓëÖñ¸ÍlÏà¾à30cm£¬Ëû°´ÕÕÈçÏÂÖ¸ÁîÌø¶¯£ºµÚÒ»ÌøÂäµãÓÚP1£¬PÓëP1¹ØÓÚµãA³ÉÖÐÐĶԳƣ»µÚ¶þÌøÂäµãÓÚP2£¬P2ÓëP1¹ØÓÚÖñ¸Íl³ÉÖá¶Ô³Æ£»µÚÈýÌøÂäµãÓÚP3£¬P3ÓëP2¹ØÓÚµãB³ÉÖÐÐĶԳƣ»µÚËÄÌøÂäµãÓÚP4£¬P4ÓëP3¹ØÓÚÖñ¸Íl³ÉÖá¶Ô³Æ£»ÒÔ´ËÔ¾ÏÂÈ¥£¬Èôÿ25Ìø¿ÉÒÔÐÝÏ¢Ò»´Î£®
£¨1£©»­³öÕâÖ»µç×ÓÇàÍÜÇ°ËÄÌøÔ˶¯µÄ·Ïßͼ£¬²¢ÇóµãP4ÓëµãP1µÄ¾àÀ루²»Ðë˵Ã÷ÀíÓÉ£©
£¨2£©Çóµç×ÓÇàÍܵÚÈý´ÎÐÝÏ¢µãÓëµãPµÄ¾àÀ룮

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£ºµÚ4Õ¡¶Èñ½ÇÈý½ÇÐΡ·Öп¼Ì⼯£¨26£©£º4.3 ½âÖ±½ÇÈý½ÇÐμ°ÆäÓ¦Ó㨽âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

ÏÈÔĶÁ¶ÌÎÄ£¬ÔÙ½â´ð¶ÌÎĺóÃæµÄÎÊÌ⣮
¹æ¶¨ÁË·½ÏòµÄÏ߶γÆΪÓÐÏòÏ߶Σ®±ÈÈ磬¶ÔÓÚÏ߶ÎAB£¬¹æ¶¨ÒÔAΪÆðµã£¬BΪÖյ㣬±ã¿ÉµÃµ½Ò»Ìõ´ÓAµ½BµÄÓÐÏòÏ߶Σ®ÎªÇ¿µ÷Æä·½Ïò£¬ÎÒÃÇÔÚÆäÖÕµãB´¦»­ÉϼýÍ·£¨ÈçÏÂͼ-1£©£®ÒÔAΪÆðµã£¬BΪÖÕµãµÄÓÐÏòÏ߶μÇΪ£¨Æðµã×ÖĸAдÔÚÇ°Ã棬ÖÕµã×ÖĸBдÔÚºóÃ棩£®Ï߶ÎABµÄ³¤¶È½Ð×öÓÐÏòÏßABµÄ³¤¶È£¨»òÄ££©£¬¼ÇΪ||£®ÏÔÈ»£¬ÓÐÏòÏ߶κÍÓÐÏòÏ߶㤶ÈÏàͬ£®·½Ïò²»Í¬£¬ËüÃDz»ÊÇͬһÌõÓÐÏòÏ߶Σ®
¶ÔÓÚͬһƽÃæÄÚµÄÓÐÏòÏ߶Σ¬ÎÒÃÇ¿ÉÒÔÔÚ¸ÃƽÃ潨Á¢Ö±½Ç×ø±êϵ½øÐÐÑо¿£¨Ò»°ãÇé¿ö£¬Ö±½Ç×ø±êϵµÄµ¥Î»³¤¶ÈÓëÓÐÏòÏ߶εĵ¥Î»³¤¶ÈÏàͬ£©£®±ÈÈ磬ÒÔ×ø±êÔ­µãO£¨0£¬0£©ÎªÆðµã£¬P£¨3£¬0£©ÎªÖÕµãµÄÓÐÏòÏ߶Σ¬Æä·½ÏòÓëxÖáÕý·½ÏòÏàͬ£¬³¤¶È£¨»òÄ££©ÊÇ||=3£®
ÎÊÌ⣺
£¨1£©ÔÚÈçͼËùʾµÄƽÃæÖ±½Ç×ø±êϵÖл­³öÓÐÏòÏ߶Σ¬Ê¹µÃ=3£¬ÓëxÖáÕý°ëÖáµÄ¼Ð½ÇÊÇ45°£¬ÇÒÓëyÖáµÄ¸º°ëÖáµÄ¼Ð½ÇÊÇ45°£»
£¨2£©ÈôÓÐÏòÏ߶εÄÖÕµãBµÄ×ø±êΪ£¨3£¬£©£¬ÊÔÇó³öËüµÄÄ£¼°ËüÓëxÖáÕý°ëÖáµÄ¼Ð½Ç£»
£¨3£©ÈôµãM¡¢A¡¢PÔÚͬһֱÏßÉÏ£¬³ÉÁ¢Âð£¿ÊÔ»­³öʾÒâͼ¼ÓÒÔ˵Ã÷£®£¨Ê¾Òâͼ¿ÉÒÔ²»»­ÔÚƽÃæÖ±½Ç×ø±êϵÖУ©

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸