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任务13：随机转盘
Author:
陈丽婷
GeoGebra
New Resources
龙形曲线-分形龙2
第八周作业2
常见四边形是否是双心四边形
三角函数 的副本
双心四边形
Discover Resources
利用圓來畫橢圓
五位數
ycmc P5 Math lesson 1-2
基础知识
旋转体
Discover Topics
Circumcircle or Circumscribed Circle
Quadrilaterals
Constructions
Multiplication
Linear Programming or Linear Optimization