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Author:
陳兪宏
孟哲老師解法
GeoGebra
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近似值：有效數字
三位數除以一位數（二）
兩組對邊相等的四邊形
球體建築師
【案例】2018年全国1卷理科12题
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判斷柱體 3
相切的三圓
繡曲線
cos(π/n)cos(2π/n)cos(3π/n) ... cos(nπ/n) = ?
面積趣味題
Discover Topics
Natural Numbers
Set Theory
Translation
Scalene Triangles
Rectangle