八年级数学下册3.1.2图形的平移课件(新版)北师大版.ppt
1playplay2312345678012345123491054123456780123451234910551234567801234512349105(x,y)(x,y)(0,0)(0,0) (5,4)(5,4) (3,0)(3,0) (5,1)(5,1) (5,-1)(5,-1) (3,0)(3,0) (4,-2)(4,-2) (0,0)(0,0)(x+5,y)(x+5,y) (5,0)(5,0)(10,(10,4)4)(8,0)(8,0) (10,1)(10,1)(10,-1)(10,-1) (8,0)(8,0) (9,-2)(9,-2) (5,0)(5,0)61234567801234512349105(x,y)(x,y)(0,0)(0,0)(5,4)(5,4)(3,0)(3,0)(5,1)(5,1)(5,-1)(5,-1)(3,0)(3,0)(4,-2)(4,-2)(0,0)(0,0)(x-2,y)(x-2,y)(-2,0)(-2,0)(3,4)(3,4)(1,0)(1,0)(3,1)(3,1)(3,-1)(3,-1)(1,0)(1,0)(2,-2)(2,-2)(-2,0)(-2,0)71、原图形被向左（向右）平移ImI个单位:(x , y)(x+m , y)m0时，时，向向右右平移平移ImI个单位个单位m0 时，时，向向左左平移平移ImI个单位个单位2原图形被向左（向右）平移原图形被向左（向右）平移ImI个单位个单位: :81234567801234512349105(x,y)(x,y)(0,0)(0,0) (5,4)(5,4) (3,0)(3,0) (5,1)(5,1) (5,-1)(5,-1) (3,0)(3,0) (4,-2)(4,-2) (0,0)(0,0)(x,y-3)(x,y-3) (0,-3)(0,-3) (5,1)(5,1) (3,-3)(3,-3)(5,-2)(5,-2) (5,-4)(5,-4) (3,-3)(3,-3) (4,-5)(4,-5) (0,-(0,-3)3)91234567801234512349105(x,y)(x,y)(0,0)(0,0) (5,4)(5,4) (3,0)(3,0) (5,1)(5,1) (5,-1)(5,-1) (3,0)(3,0) (4,-2)(4,-2) (0,0)(0,0)(x,y+2)(x,y+2) (0,2)(0,2) (5,6)(5,6) (3,2)(3,2) (5,3)(5,3)(5,1)(5,1)(3,2)(3,2) (4,0)(4,0)(0,2)(0,2)101、原图形被向左（向右）平移ImI个单位:211121 1、四边形、四边形ABCDABCD的顶点坐标分别是的顶点坐标分别是A（0,30,3），），B（3,03,0），），C（0 0，-3-3），），D（3,03,0）. .(1)(1)将四边形将四边形ABCD向右平移向右平移6 6个单位长度，得到四边形个单位长度，得到四边形A1B1C1D1，写出四边形写出四边形A1B1C1D1各顶点的坐标各顶点的坐标; ;(2)(2)将四边形将四边形A1B1C1D1向上平移向上平移6 6个单位长度，得到四边个单位长度，得到四边形形A2B2C2D2，写出四边形写出四边形A2B2C2D2各顶点的坐标各顶点的坐标. .132 2、（、（1 1）将第）将第1 1题中的四边形题中的四边形A2B2C2D2 各顶点的纵各顶点的纵坐标不变，横坐标分别减坐标不变，横坐标分别减4 4，得到四边形，得到四边形A3B3C3D3，它与四边形它与四边形A2B2C2D2相比有什么变化？相比有什么变化？(2)(2)将四边形将四边形A3B3C3D3各顶点的横坐标不变，纵坐标各顶点的横坐标不变，纵坐标分别减分别减4 4，得到四边形，得到四边形A4B4C4D4，它与四边形它与四边形A3B3C3D3相比有什么变化？相比有什么变化？1415(-1,1)16 17
