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外凸的正方形
Author:
陈宜红
Topic:
Plane Figures or Shapes
GeoGebra
New Resources
异形操场
常见四边形是否是双心四边形
第八周作业
撒针估算面积实验
第八周作业3
Discover Resources
soccer
中心对称的概念
P4周界
多項式函數係數改變之觀察
手拉手模型
Discover Topics
Orthocenter
Matrices
Circle
Inequalities
Constructions