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江苏省新沂市第二中学八年级数学上学期期中复习教案4 (新版)苏科?- 百度文库

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  • 2025/6/16 0:57:13

ʡеڶѧ꼶ѧѧиϰ̰4

ѧѧ˼άʽȥ۲˼ʵ⣬ǿѧӦʶ ѧĿ ص ̷ ѧ Ӧѧ֪ʶʵ⡣ ѧ ʦ ѵ Ӧѧ֪ʶʵ⡣ ѧ һ ϽڿΣ̸֪ʶĻõĹУ֪֪ʶǴʵлõģҲ˵ѧԴʵҲΪʵ⡣ˣǾѧ֪ʶһЩ⡣ ֪ʶҪ 1ɶһֱУֱDZߵƽ͵бߵƽ 2ɶӦãһֱУ֪е߶ߡ c2a2b2a2c2b2b2c2a2 3ֱεʶ𣨹ɶ涨ε߳abca2b2 c2ôֱΡжһֱεһַ ̽ һıABCDУAD=3cmAB=4cmCD=12cmBC=13cmҡA=90㣬һ⣬ͬѧ A D B C ѧ ʦ ѧ ѧ ͼڨSABCУACB=900AB=5cm,BC=3cm,CDABD, 󣺣1ACij 2SABC 3CDij ͼ֪ADBCϵߣBC10MAC4MAD3MABC A BDC ġƽ֪ѧУ˵ĸߣϵӴ滹1m,ӵ¶5m,󣬷¶˸պýӴ棬ܰ˵ĸ 塢ͼ֪ABC߳ΪΪ51213ֱΪֱԲͼӰֵ ҵ ҵ ѧ

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ʡеڶѧ꼶ѧѧиϰ̰4 ѧѧ˼άʽȥ۲˼ʵ⣬ǿѧӦʶ ѧĿ ص ̷ ѧ Ӧѧ֪ʶʵ⡣ ѧ ʦ ѵ Ӧѧ֪ʶʵ⡣ ѧ һ ϽڿΣ̸֪ʶĻõĹУ֪֪ʶǴʵлõģҲ˵ѧԴʵҲΪʵ⡣ˣǾѧ֪ʶһЩ⡣ ֪ʶҪ 1ɶһֱУֱDZߵƽ͵бߵƽ 2ɶӦãһֱУ֪е߶ߡ c2a2b2a2c2

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