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1、学习资料收集于网络,仅供学习和参考,如有侵权,请联系网站删除学习资料四年级上册作图专项练习姓名学号一、画角1、画给定度数的角【方法】用量角器画角(如画60的角)画 一 条 射 线,使 量 角 器 的 中 心 和 射 线 的 端 点 重 合,0 刻 度 线和射线重合。在量角器(与 0刻度线同圈的)60刻度线的地方点一个点。以画出的射线的端点为端点,通过刚画的点,再画一条射线。画弧,标度数练习:画一个 60的角。画一个 110的角。2、画特定的角练习:画一个直角。画一个平角。画一个周角。二、画垂线。1、画已知直线的垂线。【方法】边线重合、平移到点、画线标号(直角符号)。练习:过直线上一点(A)画已
2、知直线的垂线。A?精品w o r d 可编辑资料-第 1 页,共 3 页-学习资料收集于网络,仅供学习和参考,如有侵权,请联系网站删除学习资料过直线外一点(B)画已知直线的垂线。.B 2、点到直线的距离:从直线外一点到这条直线所画的垂直线段最短,它的长度叫做这点到直线的距离。垂直线段的 长度 叫 距离。练习:怎样修路最近呢?雄壁镇 .公路三、画平行线。【方法】一贴、二靠、三移、四画。练习:.A A .四、画高。1、画平行四边形的高。【方法】从平行四边形一条边上的一点到对边引一条垂线,这点和垂足之间的线段叫做平行四边形的 高,垂足所在的边叫做平行四边形的底。画高要用虚线。并做出垂足记号。精品w
3、o r d 可编辑资料-第 2 页,共 3 页-文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 Z
4、C6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档
5、编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X
6、1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5
7、 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9
8、文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J
9、4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9学习资料收集于网络,仅供学习和参考,如有侵权,请联系网站删除学习资料底底底2、画梯形的高。(梯形的腰上是不可以画高的。)练习:画出已知底上的高。五、画图形练习:(1)画一个长 4 厘米,宽 2 厘米的长方形。画一个边
10、长为 3 厘米的正方形。在点子图上画出一个平行四边和一个梯形,并画出一条高。.精品w o r d 可编辑资料-第 3 页,共 3 页-文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5
11、 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9
12、文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J
13、4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6
14、I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2
15、B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9文档编码:CA2G7D5J4X1 HW2T7D5I6I5 ZC6M7A10I2B9
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