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Author:
朱亮
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
四邊形的特性
柱體建築師
近似值：有效數字
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semops_錐體
gjc090a23 鈍角三角形外心
All in one (Centres of triangle)
Reuleaux triangle 掃地機器人v1.0
Copy of 劉徽的「割圓術」
Discover Topics
Parallelogram
Cylinder
Arithmetic
Cone
Mathematics