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-3/2 ≤ cosα + cosβ + cosγ ≤ 3
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
前提：α + β + γ = 0
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兩位數除以一位數（二）
GeoGebra笔记功能体验课件
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等的四邊形
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task 5
面積的量度
解聯立方程
hkdse 2014 by mr lo wy
卫星轨道模拟模块
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Statistical Characteristics
Parabola
Plane Figures or Shapes
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Geometric Distribution