2022年人教版数学七下5.4《平移》word学案 .pdf
名师精编优秀教案ABAED图1FEDCB课题：5.4 平移【学习目标】1、了解平移的概念，会进行点的平移。2、理解平移的性质，能解决简单的平移问题【学习重点】平移的概念和作图方法.【学习难点】平移的作图.【自主学习】预习疑难：。【合作探究】（一）平移变换预习课本P27P29，并完成以下练习1、观察思考：观察上面图形,我们发现他们都有一个局部和其他部分重复,如果给你一个局部,你能复制他们吗?2、探索活动：如何在一张半透明的纸上，画出一排形状和大小如图的雪人？3、思考：在所画的相邻的两个图案中，找出三组对应点，连接它们，观察它们的位置、长短有什么关系？4、平移定义：在平面内，将一个图形沿某个方向一定的距离，这样的图形运动称为平移，平移改变的是图形的。注意：图形的平移是由和决定的。平移的方向不一定水平。5、平移性质：平移不改变图形的和。经过平移所得的图形与原来的图形的对应线段，对应角，对应点所连的线段。6、对应练习：（1）如图 1，ABC平移到 DEF，图中相等的线段有，相等的角有，平行的线段有。（2）把一个 ABC 沿东南方向平移3cm，则 AB边上的中点P沿方向平移了cm。（3）如图，ABC是由四个形状大小相同的三角形拼成的，则可以看成是 ADF 平移得到的名师精编优秀教案BCEFGABCF图图2FEDA小三角形是。（4）如图，DEF 是由 ABC先向右平移格，再向平移格而得到的。（5）如图，有一条小船，若把小船平移，使点A 平移到点B，请你在图中画出平移后的小船。（二）平移作图如图,平移三角形ABC,使点 A运动到 A,画出平移后的三角形ABC.【展示提升】（一）平移的概念1、一个图形 _叫做平移变换，简称平移。2、下列各组图形中，可以经过平移变换由一个图形得到另一个图形的是（）3、如图，O是正六边形ABCDEF 的中心，下列图形中可由 OBC 平移得到的是（）A OCD B OA B C OAFD OEF（二）平移的性质1、平移后的图形与原图形_、_完全相同，新图形中的每一个点，都是由_移动后得到的，这两个点是对应点，连接各组对应点的线段_且_或_。对应线段 _且_或_。对应角 _。2、如图，将梯形ABCD的腰 AB沿 AD平移，平移长度等于AD的长，则FEDCBABABCDACDFBCOEDABCEDA文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10名师精编优秀教案下列说法不正确的是（）A AB DE且 AB DE B DEC BC AD EC且 AD EC D BC AD EC 3、ABC沿 BC的方向平移到 DEF 的位置，（1）若B=260，F=740，则1=_，2=_，A=_，D=_（2）若 AB=4cm，AC=5cm，BC=4.5cm，EC=3.5cm，则平移的距离等于_，DF=_，CF=_。（三）平移作图1、ABC在网格中如图所示，请根据下列提示作图(1)向上平移2 个单位长度.(2)再向右移 3 个单位长度.2、已知三角形ABC、点 D，D为 A的对应点。过点D作三角形 ABC平移后的图形。【达标测评】（一）选择题1、下列哪个图形是由左图平移得到的（）ABCD2、如图所示,FDE 经过怎样的平移可得到ABC.()A.沿射线 EC的方向移动DB长;B.沿射线 EC的方向移动CD长C.沿射线 BD的方向移动BD长;D.沿射线 BD的方向移动DC长3、下列四组图形中,?有一组中的两个图形经过平移其中一个能得到-另一个,这组图形是()4、如图所示,DE F经过平移可以得到 ABC,那么C的对应角和ED的对应边分-别是()A.F,AC B.BOD,BA;C.F,BA D.BOD,AC5、在平移过程中,对应线段()ABCFEDCBAOFECBADABCD文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10名师精编优秀教案A.互相平行且相等;B.互相垂直且相等 C.互相平行(或在同一条直线上)且相等（二）填空题1、在平移过程中,平移后的图形与原来的图形_和_都相同,?因-此对应线段和对应角都 _.2、如图所示,平移 ABC可得到 DEF,如果 A=50,C=60,那么 E=_-度,EDF=_ 度,F=_ 度,DOB=_ 度.3、将正方形ABCD 沿对角线AC方向平移，且平移后的图形的一个顶点恰好在AC 的中点O处，则移动前后两个图形的重叠部分的面积是原正方形面积的。4、直角 ABC 中，AC 3cm，BC 4cm，AB 5cm，将 ABC 沿 CB方向平移3cm，则边 AB所经过的平面面积为cm2。（三）解答题1、如图所示,请将图中的“蘑菇”向左平移6 个格,再向下平移2 个格.2、如图所示,将ABC平移,可以得到 DEF,点B的对应点为点E,请画出点 A的对-应点 D、点 C的对应点 F 的位置.3、如图所示,画出平行四边形ABCD 向上平移1 厘米后的图形.4、如图，将 ABC 沿东北方向平移3cm。OFECBADECBADCBA北ACB文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 ZH10I9H10F2R10文档编码:CC5E8M1D1W3 HY10R3C7Y5I6 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