问题
填空题
在平面直角坐标系中，点P（—1，—2）关于原点对称点的坐标是_______．
答案
（1，2）
题目分析：关于原点对称点的坐标的特征：横坐标、纵坐标互为相反数．
点P（—1，—2）关于原点对称点的坐标是（1，2）．
搜题请搜索小程序“爱下问搜题”
在平面直角坐标系中，点P（—1，—2）关于原点对称点的坐标是_______．
（1，2）
题目分析：关于原点对称点的坐标的特征：横坐标、纵坐标互为相反数．
点P（—1，—2）关于原点对称点的坐标是（1，2）．
| 用方框内动词的适当形式填空. | |
| |
| 1. How long does it to get to school? 2. I can't come. I a really busy day. 3. Mr Green likes to bread. 4. Let's _ a banana milk shake. 5. some more salt to the popcorn, please. 6. You have to the banana before eating it. 7. Can you help me these tomatoes? 8. Don' t waste water into the river. 9. Next you need to all these things into the blender. 10. Finally, on the blender and you'll get some fruit salad. |