本课配套习题挑战模式1/5
如图:下列四个图案中既是轴对称图形,又是中心对称图形的是( )
A: |
B: |
C: |
D: |
- 提示1:PHA+5qC55o2u6L205a+556ew5ZKM5Lit5b+D5a+556ew55qE5a6a5LmJ5Yik5patPC9wPg==
- 答案:Qg==
PHA+6Kej77yaQeaYr+i9tOWvueensOS4jeaYr+S4reW/g+WvueensDxicj5C5piv6L205a+556ew5Lmf5piv5Lit5b+D5a+556ewPGJyPkPmmK/ovbTlr7nnp7DkuI3mmK/kuK3lv4Plr7nnp7A8YnI+ROS4jeaYr+i9tOWvueensOaYr+S4reW/g+WvueensDxicj7pgIlCPC9wPg==
本课配套习题挑战模式2/5
在平面直角坐标系中,点A(l,3)关于原点D对称的点A′的坐标为( )
A: (-1,3) |
B: (1,-3) |
C: (3,1) |
D: (-1,-3) |
- 提示1:PHA+5qC55o2u5YWz5LqO5Y6f54K55a+556ew55qE54K555qE5Z2Q5qCH54m554K577ya5Lik5Liq54K55YWz5LqO5Y6f54K55a+556ew5pe277yM5a6D5Lus55qE5Z2Q5qCH56ym5Y+355u45Y+N5Y+v55u05o6l5b6X5Yiw562U5qGI77yOPGJyPjxicj48L3A+
- 答案:RA==
PHA+6Kej77ya54K5Qe+8iGzvvIwz77yJ5YWz5LqO5Y6f54K5ROWvueensOeahOeCuUHigLLnmoTlnZDmoIfkuLrvvIgtMe+8jC0z77yJ77yOPC9wPg==
本课配套习题挑战模式3/5
下列图形:①平行四边形;②正方形;③等腰梯形;④菱形;⑤正六边形.其中既是轴对称图形又是中心对称图形的有( )
A: 1个 |
B: 2个 |
C: 3个 |
D: 4个 |
- 提示1:PHA+5qC55o2u6L205a+556ew5ZKM5Lit5b+D5a+556ew5Zu+5b2i5a6a5LmJ57uT5ZCI5Zu+5b2i55qE5oCn6LSo6YCQ5LiA5Yik5patPC9wPg==
- 答案:Qw==
PHA+6Kej77ya5bmz6KGM5Zub6L655b2i5piv5Lit5b+D5a+556ew5Zu+5b2i5LiN5piv6L205a+556ew77yM562J6IWw5qKv5b2i5piv6L205a+556ew5LiN5piv5Lit5b+D5a+556ew77yM5q2j5pa55b2i44CB6I+x5b2i44CB5q2j5YWt6L655b2i5piv5Lit5b+D5a+556ew5Zu+5b2i5Lmf5piv6L205a+556ewPC9wPg==
本课配套习题挑战模式4/5
正方形ABCD在坐标系中的位置如图所示,将正方形ABCD绕D点顺时针旋转90°后,B点的坐标为( )
A: (4,0) |
B: (4,1) |
C: (-2,2) |
D: (5,1) |
- 提示1:PHA+5qC55o2u5peL6L2s55qE5oCn6LSo5L2c5Ye65peL6L2s5ZCO55qE5Zu+5b2i77yM5YaZ5Ye654K5QuWvueW6lOeCueeahOWdkOagh+WNs+WPr+W+l+ino++8jjwvcD4=
- 答案:QQ==
PHA+6Kej77ya5aaC5Zu+77yM54K5QueahOWvueW6lOeCuULigLLnmoTlnZDmoIfkuLrvvIg077yMMO+8ie+8jjxicj48aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNkQvRTYvckJBQ0psVV9WOGJ4aVBBUkFBQWlCNGs0VEpZODc3LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC82RC9FNi9yQkFDSmxVX1Y4YnhpUEFSQUFBaUI0azRUSlk4NzcucG5nIiBoZWlnaHQ9IjE3MyIgd2lkdGg9IjE2NSI+PGJyPuaVhemAiUHvvI48L3A+
本课配套习题挑战模式5/5
顺次连接正六边形的三个不相邻的顶点.得到如图所示的图形,该图形( )
A: 既是轴对称图形也是中心对称图形 |
B: 是轴对称图形但并不是中心对称图形 |
C: 是中心对称图形但并不是轴对称图形 |
D: 既不是轴对称图形也不是中心对称图形 |
- 提示1:PHA+5qC55o2u5Lit5b+D5a+556ew55qE5a6a5LmJ5Y+v55+l5LiN5piv5Lit5b+D5a+556ew5Zu+5b2iPC9wPg==
- 答案:Qg==
PHA+6Kej77ya5piv6L205a+556ew5Zu+5b2i5L2G5bm25LiN5piv5Lit5b+D5a+556ew5Zu+5b2iPC9wPg==