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八上第13章《三角形》P11剪拼验证三角形内角和的启示
Author:
赵朝东
GeoGebra
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判斷球體
兩組對邊相等和有直角的四邊形
第八周作业
兩位數除以一位數(二)
球体的体积推导(优化版)
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切割圓面積
拿破侖定理(外拿破侖)證明一
P1 1st Maths
parallel
半角公式R.J. 沃克(R.J. Walker)
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Function Graph
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Equations
Sphere
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