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内凹的正方形
Author:
陈宜红
Topic:
Plane Figures or Shapes
GeoGebra
New Resources
比較五件物件的重量
斐波那契螺旋弧线（表格法-可动态调节）
第八周作业3
第八周作业1
撒针估算面积实验
Discover Resources
Box method for multiplication
與三個半圓相切之圓的填滿
圓周率的應用 題4
拋物線生活應用
椭圆的离心率
Discover Topics
Parallelogram
Cosine
Perimeter
Inequalities
LCM and GCD