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1、精品教案设计资料2018 版中考数学4.6 矩形、菱形、正方形导向搂 4.6涓?銆侀?夋嫨棰?1. (鏀圭紪棰 ?濡傚浘锛庡湪鑿卞舰ABCDC锛孊 D?(銆?銆?) A 锛嶢 BC B锛嶢 C锛滲 D C锛嶢 CD D锛嶰 A 锛漁 C 瑙瀽銆 ?鐢辫彵褰殑瀵硅竟ABC锛屾晠 AACD 锛屾晠 COA锛漁 C锛屾晠 D. B 2锛?鍘熷垱棰 ?濡傚浘锛屽皢鐭舰绾哥墖ABCD鎶樺彔锛屼娇寰楃偣A 鍜岀偣 C閲嶅悎锛屾姌鐥曟槸EF锛岃繛缁揈 C.鑻B锛?锛孊 C锛?锛屽垯 CE鐨勯暱涓 ?(銆?銆?) A锛? B锛?.5 C锛?.5 D锛?.8 瑙瀽銆?鐢辨姌鍙犵煡锛孍F鏄疉 C鐨勫瀭鐩村钩鍒嗙嚎
2、锛屸埓AE锛滶 C.璁綜E锛漻锛屸埖 AB锛?锛孊 C锛?锛屸埓 DE锛?锛峹.鍦t 鈻矯 DED2锛婦 E2锛滳 E2锛屽嵆 22锛?4锛峹)2 锛漻 2 锛岃寰梮锛 ?.5 锛屸埓 CE鐨勯暱涓?.5.鏁呴?塁 . C 3锛?鏀圭紪棰 ?(銆?銆?) AB锛庣煩褰 ?C锛庤彵褰?D?瑙瀽銆 ?杩炵粨AC锛孊 D 锛?鍦柍 ABD鈭礎 H 锛滺 D 锛孉 E锛滶 B锛?鈭碋 H 锛?2BD. 鍚岀悊 FG锛?2BD锛孒 G 锛?2AC锛孍 F锛?2AC. BCDAC锛滲 D锛?鈭碋 H 锛滺 G锛滸F锛滷 E锛?鈭村洓杈瑰舰 EFGHC 4锛?鏀圭紪棰 ?宸茬煡锛氶娆繛缁撶煩褰1紝濡傚浘 2
3、32 014涓?(銆?銆?) A 锛? 028涓?B锛? 026精品教案设计资料涓?C锛? 014涓?D锛? 013涓?瑙瀽銆 ?绗 ?锛?舰鐨勪釜鏁扮浉鍚岋紝閮芥槸4?锛?舰鐨勪釜鏁扮浉鍚岋紝閮芥槸2 脳 4 锛?(n?n 锛?2 脳 4 锛?(n锛?)n 锛?锛? 014鏃讹紝 2(n锛?)锛? 028.鏁呴?堿 . A 5锛?鍘熷垱棰 ?濡傚浘锛孉 BCDE鍦C鐨勫欢闀跨嚎涓婏紝 AE涓嶣 C鐩镐氦浜庣偣 F.偣 A鍑哄彂锛岀敳娌跨潃AC锛屼箼娌跨潃 AD 锛屼笝娌跨潃 A 鈫扚鈫扖鈫扗鐨勮矾D.(鐢卞厛鑷冲悗 )鏄?(銆?銆?) A锛庣敳涔欎笝 B锛庣敳涓欎箼C锛庝箼涓欑敳D 锛庝笝鐢
4、蹭箼瑙瀽銆 ?鈭靛洓杈瑰舰 ABCD?鈭碅 B锛滲 C锛滳 D锛滱 D 锛屸垹 B锛?0 掳. 鐢茶B锛婤 F锛婥 F锛滱 B 锛婤 C锛?AB锛?F锛婨 F锛婨 C锛婥 D 锛?F锛婩 C锛婥 D. 鈭碘垹 B锛濃垹 ECF锛?0 掳锛?鈭碅 F锛濧 B锛孍 F锛濩 F锛?鈭碅 F锛婩 C锛婥 D锛?AB锛孉 F锛婩 C锛婥 D锛淎 F锛婨 F锛婨 C锛婥 D 锛屸埓鐢叉瘮涓欏厛鍒帮紝涓欐瘮涔欏厛鍒帮紝鍗抽搴忔槸鐢蹭笝涔欙紟B 浜屻?佸绌6锛?鏀圭紪棰 ?BCDAB鈭禕 C锛?鈭?锛屼互鐐笲涓哄渾蹇冿紝BC鐨勯暱涓哄崐寰勭敾寮 紝浜竟 AD浜庣偣 E.EE锛?6BCD_ 锛?瑙瀽銆 ?濡傚浘
5、锛岃繛缁揃 E锛屽垯 BE锛滲 C. 璁続 B锛?x 锛孊 C锛?x锛?鈭靛洓杈瑰舰 ABCD鈭碅 B锛滳 D锛?x锛孉 D锛滲 C锛滲 E锛?x锛屸垹 A 锛?0掳锛?鐢卞嬀鑲畾鐞嗗緱锛欰E锛?x锛?鍒橠 E锛?x锛?x锛漻.鈭礎 EE锛?6 锛?鈭?x?6 锛岃寰楋細 x 锛?(璐熸暟鑸嶅幓 )锛?鍒橝 B锛?x 锛?锛孊 C锛?x锛?0锛?BCDAB脳 BC锛?脳 10 锛?0. 60 7锛?鏀圭紪棰 ?爣蹇精品教案设计资料? cm鐨勭孩涓濆甫浜弶鎴 ?0 掳瑙掗噸鍙犲湪涓?璧?濡傚浘 )锛屽垯閲嶅彔鍥涜竟褰殑闈涓篲_cm2. 瑙瀽銆 ?杩囩偣A 浣淎 EC浜嶦锛孉 FD 浜嶧锛屽洜涓虹
6、孩涓濆甫瀹藉害鐩稿悓锛?BD锛孉 DC锛孉 E锛滱 F. 鈭村洓杈瑰舰 ABCD?鈭礢鈻盇 BCD锛滲 CE锛滳 DF. 鍙圓 E锛滱 F锛?鈭碆 C锛滳 D 锛屸埓BCD鈭碘垹 B 锛?0掳(鍥?)锛屼綔 AEC浜嶦锛屽垯 AERt鈻矨 BEAE锛? cm锛屸埓 sin 60掳锛滱 EAB锛?鈭碅 B锛?33 cmC脳 AE锛?33(cm2)锛?233 8 锛?鍘熷垱棰 ?ABCD椤剁偣 A 鐨勫潗鏍囦负 (0 锛?)锛孊鐐瑰湪 xAC锛孊 D 浜簬鐐筂锛孫 M 锛?2锛屽垯鐐笴鐨勫潗鏍囦负 _锛?瑙瀽銆 ?浣淐E翠簬 E锛孧 NN.鈭靛洓杈瑰舰 ABCDAM 锛滳 M锛孉 B锛滲 C锛屸垹
7、 ABC锛?0 掳.鈭碘垹 ABO锛嬧垹 OAB锛?0掳锛屸垹 ABO锛嬧垹 CBE锛?0掳锛屸埓鈭燨 AB锛濃垹 CBE. 鈭粹柍 OAB鈮屸柍 EBC. 鈭碆 E锛漁A锛?锛孋 E锛漁 B.鈭礎 M 锛滳 M 锛孧 NNACE鐨勪腑浣嶇嚎锛庘埓MN 锛?2(OA锛婥 E)锛孫 N锛?2(OB锛婤 E)锛庘埓 MN 锛漁 N.鈭礝 M 锛?2 锛屸埓 MN 锛漁 N 锛?.鈭碠 E锛?锛孋 E锛?.鈭寸偣 C鐨勫潗鏍囦负(6 锛?)锛?(6 锛?) 9锛?鍘熷垱棰 ?ABCD鐨勫悇杈规寜濡傚浘鎵?绀哄欢闀匡紝浠庡皠绾緼B寮?濮嬶紝鍒嗗埆鍦悇灏勭嚎涓婃爣璁扮偣 A1 锛孉 2 锛孉 32 01
8、5鍦皠绾縚_涓婏紟 瑙瀽銆 ?钀藉湪灏勭嚎AB涓婄殑鐐逛緷娆负锛欰1 锛孉3 锛孉 10 锛孉 12 鈥紱钀藉湪灏勭嚎CD涓婄殑鐐逛緷娆负锛欰2 锛孉 4 锛孉 9 锛孉 11 鈥紱钀藉湪灏勭嚎BC涓婄殑鐐逛緷娆负锛欰5 锛孉 7 锛孉 14锛孉 16 鈥紱钀藉湪灏勭嚎DA涓婄殑鐐逛緷娆负锛欰6 锛孉 8 锛孉 13 锛孉15 鈥紱鍗虫瘡 16? 015梅 16锛?25鈥? ?5锛岃?孉15 钀藉湪灏勭嚎 DA2 015 涔熻惤鍦皠绾緿A涓婏紟DA 涓夈?佽 10 锛?鍘熷垱棰 ?精品教案设计资料45BCD鐨勯 鐐冪殑涓竟鍒B銆丏 C(?浜庣偣 M 銆丯. (1)濡傚浘 1 锛屽綋涓M 锛滵
9、N 鏃讹紝鏈塀 M 锛婦 N 锛滿 N.褰撲笁瑙掓澘缁曠偣 A 鏃嬭浆鍒癇 M 鈮燚 N 鏃讹紝濡傚浘 21?(2)褰撲笁瑙掓澘缁曠偣A?锛岀嚎娈礏 M 锛孌 N 鍜孧 N 涔嬮棿鏈夋 ?庢牱鐨勭瓑閲忓叧绯伙紵璇峰啓鍑轰綘鐨勭寽鎯筹紝骞惰瘉鏄庯紟瑙?(1)BM 锛婦 N 锛滿 N. ?锛屽湪 MB 鐨勫欢闀跨嚎涓婃埅鍙朆E锛滵N 锛岃繛缁揂 E. 鏄撹瘉鈻矨 BE鈮屸柍 ADN(SAS) 锛?鈭?AE锛滱 N 锛屸垹 EAB锛濃垹 NAD. 鈭碘垹 BAD锛?0掳锛屸垹 NAM 锛?5 掳锛?鈭粹垹 BAM 锛嬧垹 NAD锛?5掳锛?鈭粹垹 EAB锛嬧垹 BAM 锛?5掳. 鈭粹垹 EAM锛濃
10、垹 NAM.鍙圓 M 涓哄叕鍏辫竟锛 ?鈭粹柍 AEM鈮屸柍 ANM. 鈭碝 E锛滿 N. 鈭碝 N 锛滿 E锛滲 E锛婤 M 锛滵 N 锛婤 M 锛屽嵆 DN锛婤 M 锛滿 N. (2)鐚滄兂锛氱嚎娈礏M 锛孌 N 鍜孧 N 涔嬮棿鐨勭瓑閲忓叧绯讳负锛欴N锛岯 M 锛滿 N. ?锛屽湪DN涓婃埅鍙朌 E锛滿 B锛岃繛缁揂 E. 鏄撹瘉鈻矨 BM 鈮屸柍 ADE(SAS) 锛?鈭碅M 锛滱 E锛屸垹 MAB锛濃垹 EAD. 鏄撹瘉鈻矨 MN 鈮屸柍 AEN(SAS) 锛?鈭碝 N锛滶 N. 鈭礑 N 锛岲 E锛滶 N 锛屸埓 DN锛岯 M 锛滿 N. 11锛?鏀圭紪棰 ?宸茬煡鍥BCD偣 P浠
11、嶣鐐瑰紑濮嬶紝娌垮皠绾緽C杩愬姩锛岃繛缁揇P锛屼綔 CNP浜庣偣 M 锛屼笖浜洿绾緼B浜庣偣 N 锛岃繛缁揙 P锛孫 N.(褰撶偣 P鍦嚎娈礏 C?锛涘綋鐐筆鍦 C鐨勫欢闀跨嚎鏃讹紝濡傚浘2) (1)璇蜂粠鍥 ?锛屽浘 2 浠婚?変竴鍥捐瘉鏄庝笅闈粨璁猴細鈶燘 N锛滳 P锛?P锛漁 N锛屼笖 OPN. (2)璁続 B锛?锛孊 P鐐圭殑鍥涜竟褰殑闈y 涓巟鐨勫嚱鏁板叧绯伙紟瑙?(1)閫夋嫨鍥 ?璇佹槑锛 ?BCD?鈭碆 C锛滳 D锛屸垹 ABC锛精品教案设计资料濃垹 BCD锛?0 掳.鈭礐 NP锛?鈭粹垹 PCM锛嬧垹 CPD锛?0 掳锛屸垹 CDP锛嬧垹 CPD锛?0掳. 鈭粹垹 PCM锛濃垹
12、 CDP .鈭粹柍 NBC鈮屸柍 PCD. 鈭碆 N 锛滳P . 鈶埖 AB锛滲 C锛孊 N 锛滳 P锛屸埓 AN锛滲 P . 鍙堚埖鈭燨 AN锛濃垹 OBP锛?5掳锛孫 A 锛漁 B锛?鈭粹柍 AON鈮屸柍 BOP .鈭碠 P锛漁 N 锛屸垹 AON锛濃垹 BOP . 鈭碘垹 AON锛嬧垹 BON锛?0 掳锛屸埓鈭燘 OP锛嬧垹 BON锛?0 掳. 鍗砄 PN.鈭碠 P锛漁 N 锛屼笖 OPN. 閫夋嫨鍥 ?璇佹槑锛 ?鈶犫埖 CN鈯P锛屸垹 PCD锛?0掳锛屸埓鈭燩 DC锛濃垹 PCM锛濃垹 NCB. 鍦柍 DCP涓庘柍 CBN鈭碘垹 PDC锛濃垹 NCB锛孌 C锛滳 B锛?鈭燚 CP锛濃
13、垹 CBN锛?0掳锛?鈭粹柍 DCP鈮屸柍 CBN. 鈭碈 P锛滲 N. 鈶湪鈻矯 OP涓庘柍 BON鈭礐 O锛滲 O 锛屸垹 OCP锛濃垹 OBN锛?35 掳锛孋 P锛滲 N 锛?鈭粹柍 COP鈮屸柍 BON锛屸埓 OP锛漁 N. 鈭粹垹 COP锛濃垹 BON锛岃?屸垹BON锛嬧垹 NOC锛?0掳. 鈭粹垹 COP锛嬧垹 NOC锛?0掳锛屽嵆 OPN. (2)鈶犲綋 P鍦C涓婏紝鍗 ?x4 鏃讹紟 杩囩偣 O 浣淥 HN 浜嶩锛岃繛缁揚N.濡傚浘锛 ?鈭礎 B锛?锛屸埓 OH锛滲 H 锛?. 鈭礏N 锛滳 P锛滲 P锛岯 C锛漻锛岯 C锛漻锛 ?锛?鈭碨鈻砄 BN锛?2OHN 锛?2脳 2(x 锛?)锛漻锛 ?. 鈭礝 H 锛?锛孒 N 锛滲 H 锛婤 N 锛?锛媥锛 ?锛漻锛 ?锛?鈭碠N 锛漁 H2 锛婬 N2 锛?锛嬶紙 x 锛?锛?. 鈭碠 P锛漁 N 锛?锛嬶紙 x 锛?锛?.鈭礝 PN 锛?鈭碨鈻砅 ON锛?2OPN 锛?2脳 4 锛嬶紙 x 锛?锛?脳 4 锛嬶紙 x锛?锛?锛?24 锛?x锛?)2锛?2x2锛?x锛?. BNP锛漇鈻砄 BN锛婼鈻砅 ON锛漻锛 ?锛?2x2锛?x锛?锛?12x2锛峹.鍗硑锛 ?2x2锛峹. 缁煎悎涓婅堪锛屼互 O锛孭锛孊锛孨涓洪 鐐圭殑鍥涜竟褰殑闈y 涓巟鐨勫嚱鏁板叧绯绘槸 y 锛?锛岋紙 0 x4锛?
