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滾滾硬幣
Author:
陳隆期
GeoGebra
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四邊形的特性
【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
兩位數除以一位數（二）
三位數除以一位數（一）
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prism
How to draw a pentagon with ruler and compasses?
六年級_截面_錐體_多邊形
四邊形層疊
黃金螺線62326 劉虹圻
Discover Topics
Normal Distribution
Fractal Geometry
Natural Numbers
Median Line
Derivative