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反射定律 Law of Reflection
Author:
W.L. Wong, Albert
GeoGebra
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四邊形的特性
兩位數加法
找出對稱軸
算柱 (兩位數)
異分母分數減法
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测试
zhengming
P4 多邊形周界01 測試
堆疊正立方體的副本
阿波羅尼斯圓 的複本
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Secant Line or Secant
Step Functions
Logic
Median Line
Quadrilaterals