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外凸的正方形
Author:
陈宜红
Topic:
Plane Figures or Shapes
GeoGebra
New Resources
双心四边形
斐波那契螺旋弧线（表格法-可动态调节）
盈利與虧蝕
龙形曲线-分形龙
第八周作业2
Discover Resources
五下_分數除法(學生版)
四心的變化II
np2c
正十二面體轉正二十面體
Angle at Centre and Angle at circumference
Discover Topics
Orthocenter
Quadrilaterals
Surface
Functions
Inequalities