1.已知AB=AC,角A=40度,AC的垂直平分线MN交AB于点D,则角DCB=_____.2.把一张长方形纸片沿对角线折叠,重合的部分是什么图形?试说明理由.3.等腰三角形腰和底之比为1:根号2,则它的底角等于______.4.直角
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/16 19:02:05
![1.已知AB=AC,角A=40度,AC的垂直平分线MN交AB于点D,则角DCB=_____.2.把一张长方形纸片沿对角线折叠,重合的部分是什么图形?试说明理由.3.等腰三角形腰和底之比为1:根号2,则它的底角等于______.4.直角](/uploads/image/z/7095359-47-9.jpg?t=1.%E5%B7%B2%E7%9F%A5AB%3DAC%2C%E8%A7%92A%3D40%E5%BA%A6%2CAC%E7%9A%84%E5%9E%82%E7%9B%B4%E5%B9%B3%E5%88%86%E7%BA%BFMN%E4%BA%A4AB%E4%BA%8E%E7%82%B9D%2C%E5%88%99%E8%A7%92DCB%3D_____.2.%E6%8A%8A%E4%B8%80%E5%BC%A0%E9%95%BF%E6%96%B9%E5%BD%A2%E7%BA%B8%E7%89%87%E6%B2%BF%E5%AF%B9%E8%A7%92%E7%BA%BF%E6%8A%98%E5%8F%A0%2C%E9%87%8D%E5%90%88%E7%9A%84%E9%83%A8%E5%88%86%E6%98%AF%E4%BB%80%E4%B9%88%E5%9B%BE%E5%BD%A2%3F%E8%AF%95%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1.3.%E7%AD%89%E8%85%B0%E4%B8%89%E8%A7%92%E5%BD%A2%E8%85%B0%E5%92%8C%E5%BA%95%E4%B9%8B%E6%AF%94%E4%B8%BA1%3A%E6%A0%B9%E5%8F%B72%2C%E5%88%99%E5%AE%83%E7%9A%84%E5%BA%95%E8%A7%92%E7%AD%89%E4%BA%8E______.4.%E7%9B%B4%E8%A7%92)
xR[n@O52|T8[T݀!(F9 _ꆦ(Z6M+x-ggk\o#bAöih;Vس}?j/i'?,XLKPCh!>uҲ#*^txna&'h
vRZFHlT KU`T|$A5b/_ҾOw
'FE?hsQ(Y gU C<4{U\(^*i8fxbLz6t*
k*00Xek*@Kڵ:
UnuÔ9iʚo89I ESArлWR_