{"id":836,"date":"2016-07-24T10:01:10","date_gmt":"2016-07-24T02:01:10","guid":{"rendered":"http:\/\/www.xuehelp.cn\/?p=836"},"modified":"2016-07-24T10:01:10","modified_gmt":"2016-07-24T02:01:10","slug":"%e5%88%9d%e4%ba%8c%ef%bc%88%e4%b8%8b%ef%bc%89%e7%ac%ac%e4%b8%80%e5%ad%a6%e6%9c%88%e8%80%83%e8%af%95%e6%95%b0%e5%ad%a6%e8%af%95%e5%8d%b7","status":"publish","type":"post","link":"http:\/\/www.xuehelp.cn\/index.php\/archives\/836","title":{"rendered":"\u521d\u4e8c\uff08\u4e0b\uff09\u7b2c\u4e00\u5b66\u6708\u8003\u8bd5\u6570\u5b66\u8bd5\u5377"},"content":{"rendered":"<p>\u4e00\u3001<strong>\u9009\u62e9\u9898\uff1a<\/strong><\/p>\n<p>1\uff0e\u4e0b\u5217\u8bf4\u6cd5\uff1a\uff081\uff09\u56db\u8fb9\u5f62\u6700\u591a\u67093\u4e2a\u949d\u89d2. (2) \u56db\u8fb9\u5f62\u6700\u591a\u67093\u4e2a\u9510\u89d2.<\/p>\n<p>\uff083\uff09\u56db\u8fb9\u5f62\u81f3\u5c11\u67091\u4e2a\u949d\u89d2\u3002\uff084\uff09n\u8fb9\u5f62\u7684\u5185\u89d2\u548c\u80fd\u88ab180\u6574\u9664\u3002<\/p>\n<p>\u5176\u4e2d\u6b63\u786e\u7684\u6709\uff08\u00a0 \uff09\u00a0 \uff08A\uff091\u4e2a\u00a0\u00a0\u00a0 \uff08B\uff092\u4e2a\u00a0\u00a0\u00a0 \uff08C\uff093\u4e2a\u00a0\u00a0 \uff08D\uff094\u4e2a<\/p>\n<p>2\uff0e\u4e03\u8fb9\u5f62\u7684\u5bf9\u89d2\u7ebf\u7684\u6761\u6570\u662f\uff08\u00a0\u00a0 \uff09<\/p>\n<p>\uff08A\uff0910\u00a0\u00a0\u00a0\u00a0 \uff08B\uff0912\u00a0\u00a0\u00a0\u00a0 \uff08C\uff0914\u00a0\u00a0\u00a0\u00a0\u00a0 \uff08D\uff0916<\/p>\n<p>3\uff0e\u4e0b\u5217\u8bf4\u6cd5\uff1a\uff081\uff09\u5e73\u884c\u56db\u8fb9\u5f62\u7684\u5bf9\u89d2\u7ebf\u4e92\u76f8\u5e73\u5206\u3002\uff082\uff09\u83f1\u5f62\u7684\u5bf9\u89d2\u7ebf\u4e92\u76f8\u5782\u76f4\u5e73\u5206\u3002<\/p>\n<p>\uff083\uff09\u77e9\u5f62\u7684\u5bf9\u89d2\u7ebf\u76f8\u7b49\uff0c\u5e76\u4e14\u4e92\u76f8\u5e73\u5206\u3002\uff084\uff09\u6b63\u65b9\u5f62\u7684\u5bf9\u89d2\u7ebf\u76f8\u7b49\uff0c\u5e76\u4e14\u4e92\u76f8\u5782\u76f4\u5e73\u5206\u3002<\/p>\n<p>\u5176\u4e2d\u6b63\u786e\u7684\u662f\uff08\u00a0 \uff09<\/p>\n<p>\uff08A\uff09\u2460\uff0c\u2461.\uff08B\uff09\u2460\uff0c\u2461\uff0c\u2462.\uff08C\uff09\u2461\uff0c\u2462\uff0c\u2463\u00a0\u00a0 \uff08D\uff09\u2460\uff0c\u2461\uff0c\u2462\uff0c\u2463<!--more--><\/p>\n<p>4.\u4e0b\u5217\u547d\u9898\u4e2d,\u5047\u547d\u9898\u662f(\u00ad\u00a0 )<\/p>\n<p>(A)\u00ad\u5bf9\u89d2\u7ebf\u4e92\u76f8\u5e73\u5206\u4e14\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u77e9\u5f62.\u00ad(B)\u5bf9\u89d2\u7ebf\u76f8\u7b49\u7684\u83f1\u5f62\u662f\u6b63\u65b9\u5f62.<\/p>\n<p>(C)\u4e24\u90bb\u8fb9\u76f8\u7b49\u7684\u5e73\u884c\u56db\u8fb9\u5f62\u662f\u6b63\u65b9\u5f62.\u00ad\u00a0 (D)\u5bf9\u89d2\u7ebf\u4e92\u76f8\u5782\u76f4\u5e73\u5206\u7684\u56db\u8fb9\u5f62\u662f\u83f1\u5f62.<\/p>\n<p>5.\u4e0b\u5217\u56fe\u5f62\u4e2d,\u65e2\u662f\u4e2d\u5fc3\u5bf9\u79f0\u56fe\u5f62\uff0c\u53c8\u662f\u8f74\u5bf9\u79f0\u56fe\u5f62\u7684\u662f(\u00ad\u00a0 )<\/p>\n<p>(A)\u5e73\u884c\u56db\u8fb9\u5f62\u00ad\u00a0 (B)\u7b49\u8fb9\u4e09\u89d2\u5f62\u00ad\u00a0\u00a0 (C)\u77e9\u5f62\u00ad \u00a0\u00a0(D)\u7b49\u8170\u68af\u5f62<\/p>\n<p>6\uff0e\u5982\u56fe1\uff0c\u68af\u5f62ABCD\u4e2d\uff0cAD\u2225BC\uff0c\u5bf9\u89d2\u7ebfAC\u3001BD\u76f8\u4ea4\u4e8e\u70b9O\uff0c<\/p>\n<p>\u5219\u56fe\u4e2d\u9762\u79ef\u76f8\u7b49\u4e09\u89d2\u5f62\u6709\uff08\u00a0\u00a0 \uff09<\/p>\n<p>\uff08A\uff091\u5bf9\u00a0\u00a0\u00a0 \uff08B\uff092\u5bf9\u00a0\u00a0\u00a0 \uff08C\uff093\u5bf9\u00a0\u00a0\u00a0 \uff08D\uff094\u5bf9<\/p>\n<p>7\uff0e\u56db\u8fb9\u5f62ABCD\u7684\u5bf9\u89d2\u7ebf\u76f8\u4ea4\u4e8eO\u70b9\uff0c\u80fd\u5224\u5b9a\u56db\u8fb9\u5f62\u662f\u6b63\u65b9\u5f62\u7684\u6761\u4ef6\u662f\uff08\u00a0\u00a0 \uff09<\/p>\n<p>\uff08A\uff09AC=BD\uff0cAB=CD\uff0cAB\u2225CD\u3002\uff082\uff09AD\u2225BC\uff0c\u2220A=\u2220C\u3002<\/p>\n<p>\uff08C\uff09AO=BO=CO=DO\uff0cAC\u22a5BD\u3002\uff08D\uff09AO=CO\uff0cBO=DO\uff0cAB=BC\u3002<\/p>\n<p>8\uff0e\u4e0b\u5217\u8bf4\u6cd5\uff1a\u2460\u4e00\u7ec4\u5bf9\u8fb9\u5e73\u884c\uff0c\u53e6\u4e00\u7ec4\u5bf9\u8fb9\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u5e73\u884c\u56db\u8fb9\u5f62\u6216\u7b49\u8170\u68af\u5f62\u3002<\/p>\n<p>\u2461\u4e00\u7ec4\u5bf9\u8fb9\u5e73\u884c\uff0c\u4e00\u7ec4\u5bf9\u89d2\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u5e73\u884c\u56db\u8fb9\u5f62\u3002<\/p>\n<p>\u2462\u4e24\u7ec4\u5bf9\u89d2\u5206\u522b\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u5e73\u884c\u56db\u8fb9\u5f62\u3002<\/p>\n<p>\u2463\u987a\u6b21\u8fde\u7ed3\u7b49\u8170\u68af\u5f62\u5404\u8fb9\u4e2d\u70b9\u6240\u5f97\u5230\u7684\u56db\u8fb9\u5f62\u662f\u83f1\u5f62\u3002\u5176\u4e2d\u6b63\u786e\u7684\u662f\uff08\u00a0 \uff09<\/p>\n<p>\uff08A\uff09\u2460\u2461.\uff08B\uff09\u2460\u2461\u2462.\uff08C\uff09\u2461\u2462\u2463\u00a0\u00a0 \uff08D\uff09\u2460\u2461\u2462\u2463\u3002<\/p>\n<p>9\uff0e\u987a\u6b21\u8fde\u7ed3\u56db\u8fb9\u5f62\u56db\u6761\u8fb9\u7684\u4e2d\u70b9\uff0c\u6240\u5f97\u7684\u56db\u8fb9\u5f62\u662f\u83f1\u5f62\uff0c\u5219\u539f\u56db\u8fb9\u5f62\u4e00\u5b9a\u662f\uff08\u00a0\u00a0 \uff09<\/p>\n<p>\uff08A\uff09\u5e73\u884c\u56db\u8fb9\u5f62.(B) \u5bf9\u89d2\u7ebf\u76f8\u7b49\u7684\u56db\u8fb9\u5f62.(C) \u77e9\u5f62.(D) \u5bf9\u89d2\u7ebf\u4e92\u76f8\u5782\u76f4\u7684\u56db\u8fb9\u5f62.<\/p>\n<p>10.\u00ad\u5982\u56fe2,\u77e9\u5f62ABCD\u4e2d,\u2220AOD=120<sup>0<\/sup>, BC= 3 cm,\u5219\u4e0b\u5217\u7ed3\u8bba\uff1a<\/p>\n<p>\u2460\u22202=30<sup>0<\/sup>. \u2461AB=3 cm. \u2461\u00adAC==6cm. \u2463S<sub>\u77e9\u5f62ABCD<\/sub>=9 cm<sup>2<\/sup>.<\/p>\n<p>(5) \u0394AOB\u662f\u7b49\u8fb9\u4e09\u89d2\u5f62. \u5176\u4e2d\u6b63\u786e\u7684\u6709\uff08\u00a0 \uff09<\/p>\n<p>\uff08A\uff09\u2460\u2461\u2462.\uff08B\uff09\u2460\u2461\u2462\u2463.\uff08C\uff09\u2461\u2462\u2463\u2464.\uff08D\uff09\u2460\u2461\u2462\u2463\u2464\u3002<\/p>\n<ol start=\"11\">\n<li>\u5982\u56fe3,\u83f1\u5f62ABCD\u7684\u9762\u79ef\u4e3a2 ,\u2220ABC\u2236\u2220BAD=1\u22362,\u5219\u4e0b\u5217\u7ed3\u8bba:<\/li>\n<\/ol>\n<p>\u2460\u2220ABC=60<sup>0<\/sup>.\u2461\u2220ABO=30<sup>0<\/sup>.\u2462 AC=2.\u2463BD=2 .\u2464\u83f1\u5f62ABCD\u7684\u5468\u957f\u662f8.<\/p>\n<p>\u5176\u4e2d\u6b63\u786e\u7684\u6709\uff08\u00a0 \uff09<\/p>\n<p>\uff08A\uff09\u2460\u2461\u2462\u2463\u2464.\uff08B\uff09\u2460\u2461\u2462\u2463.\uff08C\uff09\u2461\u2462\u2463\u2464.\uff08D\uff09\u2460\u2461\u2462.<\/p>\n<p>12.\u5982\u56fe4,\u6b63\u65b9\u5f62ABCD\u4e2d,\u70b9E\u5728BC\u7684\u5ef6\u957f\u7ebf\u4e0a\uff0cAE\u5e73\u5206\u2220DAC,\u5219\u4e0b\u5217\u7ed3\u8bba:<\/p>\n<p>\uff081\uff09\u2220E=22.5<sup>0<\/sup>. (2) \u2220AFC=112.5<sup>0<\/sup>. (3) \u2220ACE=135<sup>0<\/sup>.<\/p>\n<p>\uff084\uff09AC=CE\u3002(5) AD\u2236CE=1\u2236 . \u5176\u4e2d\u6b63\u786e\u7684\u6709\uff08\u00a0 \uff09<\/p>\n<p>\uff08A\uff095\u4e2a\u00a0\u00a0\u00a0 \uff08B\uff094\u4e2a\u00a0\u00a0\u00a0 \uff08C\uff093\u4e2a\u00a0\u00a0 \uff08D\uff092\u4e2a<\/p>\n<ol start=\"13\">\n<li>\u5982\u56fe5\uff0c\u5728\u68af\u5f62ABCD\u4e2d\uff0cAD\u2225BC\uff0cAC\u22a5BD\uff0cAC=3cm\uff0cBD=4cm.<\/li>\n<\/ol>\n<p>\u4f5cDE\u2225AC\uff0c\u4ea4BC\u7684\u5ef6\u957f\u7ebf\u4e8eE\uff0c\u5219\u4e0b\u5217\u7ed3\u8bba:<\/p>\n<p>(1)\u00a0\u00a0\u00a0 \u56db\u8fb9\u5f62ACED\u662f\u5e73\u884c\u56db\u8fb9\u5f62. \uff082\uff09\u2220BDE=\u2220BOC=90<sup>0<\/sup>;<\/p>\n<p>(2)\u00a0\u00a0\u00a0 BC+AD=BE=5cm; (4)\u68af\u5f62ABCD\u7684\u9ad8DH= =2.4cm,\u9762\u79ef\u4e3a 6cm<sup>2<\/sup>\uff1b<\/p>\n<p>\uff08\uff15\uff09S<sub>\u68af\u5f62ABCD<\/sub>=S<sub>\u0394BDE<\/sub>.\u3002\u5176\u4e2d\u6b63\u786e\u7684\u6709\uff08\u00a0 \uff09<\/p>\n<p>\uff08A\uff095\u4e2a\u00a0\u00a0\u00a0 \uff08B\uff094\u4e2a\u00a0\u00a0\u00a0 \uff08C\uff093\u4e2a\u00a0\u00a0 \uff08D\uff092\u4e2a<\/p>\n<p>14.\u5982\u56fe6\uff0c\u68af\u5f62ABCD\u4e2d\uff0cAD\u2225BC\uff0cAH=HC,DG=GB\uff0cGH\u4ea4\u4e24\u8170\u4e8eE\u3001F. \u5219\u4e0b\u5217\u7ed3\u8bba:<\/p>\n<p>(1)\u00a0 AE=EB\uff0cDF=FC\u3002 (2) AD\u2225EF\u2225BC. (3)EH=GF= BC,EG=HF= AD.(4)GH= (BC-AD).<\/p>\n<p>\u5176\u4e2d\u6b63\u786e\u7684\u6709\uff08\u00a0 \uff09\uff08A\uff091\u4e2a\u00a0\u00a0\u00a0 \uff08B\uff092\u4e2a\u00a0\u00a0\u00a0 \uff08C\uff093\u4e2a\u00a0\u00a0 \uff08D\uff09\uff14\u4e2a<\/p>\n<p>15\uff0e\u76f4\u89d2\u68af\u5f62\u7684\u4e00\u4e2a\u5185\u89d2\u4e3a \uff0c\u8f83\u957f\u7684\u8170\u4e3a6cm\uff0c\u4e00\u5e95\u4e3a5cm\uff0c\u5219\u8fd9\u4e2a\u68af\u5f62\u7684\u9762\u79ef\u4e3a\uff08\u00a0 \u00a0\uff09<\/p>\n<p>\uff08A\uff09 .\uff08B\uff09 .\uff08C\uff0925 .\uff08D\uff09 \u6216 .<\/p>\n<p><strong>\u4e8c\u3001<\/strong><strong>\u586b\u7a7a\uff1a<\/strong><\/p>\n<p>16.\u82e5\u7b49\u8170\u68af\u5f62\u7684\u5468\u957f\u4e3a80cm, \u9ad8\u4e3a12cm,\u4e2d\u4f4d\u7ebf\u957f\u4e0e<\/p>\n<p>\u8170\u957f\u76f8\u7b49, \u5219\u5b83\u7684\u9762\u79ef\u4e3a________cm<sup>2<\/sup>.<\/p>\n<p>17.\u5982\u56fe7\uff0c\u4e00\u5757\u77e9\u5f62\u573a\u5730,\u957f\u4e3a120\u7c73,\u5bbd\u4e3a70\u7c73,<\/p>\n<p>\u4ece\u4e2d\u7559\u51fa\u5982\u56fe\u6240\u793a\u7684\u5bbd\u4e3a1\u7c73\u7684\u5c0f\u9053,\u5176\u4f59\u90e8\u5206\u79cd\u8349,<\/p>\n<p>\u5219\u8349\u576a\u7684\u9762\u79ef\u4e3a__________\u7c73<sup>2<\/sup>.<\/p>\n<p>18\uff0e\u77e9\u5f62ABCD\u7684\u5468\u957f\u662f14 \uff0c\u5bf9\u89d2\u7ebf\u76f8\u4ea4\u4e8eO\uff0c\u0394AOD\u4e0e\u0394AOB\u7684\u5468\u957f\u7684\u5dee\u662f1 \uff0c\u90a3\u4e48\u8fd9\u4e2a\u77e9\u5f62\u7684\u9762\u79ef\u662f______\u3002<\/p>\n<p>19\uff0e\u5e73\u884c\u56db\u8fb9\u5f62ABCD\u4e2d\uff0cAB=6 \uff0cBC=12 \uff0c\u5bf9\u8fb9AD\u548cBC\u7684\u8ddd\u79bb\u662f4 \uff0c\u5219\u5bf9\u8fb9AB\u548cCD\u95f4\u7684\u8ddd\u79bb\u662f______\u3002<\/p>\n<p>20\uff0e\u83f1\u5f62\u4e24\u5bf9\u89d2\u7ebf\u957f\u5206\u522b\u4e3a24 \u548c10 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\uff08BC-AD\uff09\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>26\uff0e \u5982\u56fe\uff0c\u5728\u6b63\u65b9\u5f62ABCD\u7684\u5bf9\u89d2\u7ebfBD\u4e0a\u53d6\u4e00\u70b9E\uff0c\u4f7fBE=BC\uff0c\u8fc7E\u70b9\u4f5cFG\u22a5BD\uff0cFG\u4e0eAD\u3001DC\u76f8\u4ea4\u4e8eG\u3001F\u3002\u6c42\u8bc1\uff1aDE=EF=FC\u3002<\/p>\n<p>27.\u5982\u56fe,\u68af\u5f62ABCD\u4e2d, DC\u2225AB\uff0c\u5bf9\u89d2\u7ebf\u76f8\u4ea4\u4e8eE\uff0c\u2220AEB=60<sup>0<\/sup>\uff0cAC=BD=24cm,AB=3DC\uff0c\u6c42\u68af\u5f62ABCD\u7684\u5468\u957f\u548c\u9762\u79ef\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>28\uff0e\u5df2\u77e5\uff1a\u5982\u56fe\uff0c\u0394ABC\u4e2d\uff0cAD\u662f\u9ad8\uff0cBE=EC\uff0c\u2220C=2\u2220B\u3002\u6c42\u8bc1\uff1aAC=2ED\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<ol start=\"29\">\n<li>\u5982\u56fe, \u7b49\u8170\u68af\u5f62ABCD\u4e2d, 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