请展开查看知识点列表
1- = - = + = - =
+ = + = - = + =
画出三角形AOB绕点O顺时针旋转90度的图形,画出三角形CDE绕点E逆时针旋转90度的图形
- = - = + = 3- =
12+ = + = 0.75+ = - =
① - + -
②1- -
③ -( - )
④ + +
⑤19+ +
⑥ +( - )
进入组卷