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2019年春八年级数学下册第19章四边形章末小结与提升课件（新版）沪科版.pptx

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第19章 四边形,解:( 1 )AB=6,每次向右平移5个单位, AA1=5,A1A2=5,A2B1=A1B1-A1A2=6-5=1, AB1=AA1+A1A2+A2B1=5+5+1=11, AB2=5+5+6=16. ( 2 )由AB1=25+1=11,AB2=35+1=16, 可知ABn=( n+1 )5+1=56,解得n=10.,

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