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变化的三角形的旁心.许兴华数学
Author:
许兴华数学
Topic:
Geometric Transformations
,
Triangles
GeoGebra
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兩位數加法
第八周作业
兩位數除以一位數（一）
找出對稱軸
柱體建築師
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平行四邊形
歐拉圓
量角器
XY 圖線段長度計算
三視圖
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Multiplication
Derivative
Exponential Functions
Sine
Random Experiments