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2019年春七年级数学下册第七章平面直角坐标系本章中考演练课件（新版）新人教版.pptx

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第七章 平面直角坐标系,6.( 长沙中考 )在平面直角坐标系中,将点A( -2,3 )向右平移3个单位长度,再向下平移2个单位长度,那么平移后对应的点A的坐标是 ( 1,1 ) . 7.( 新疆中考 )点( -1,2 )所在的象限是第 二 象限.,解:( 1 )图略,A( -3,1 ),B( 0,2 ),C( -1,4 ). ( 2 )三角形AOA1的面积为 1 2 41=2.,

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