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折正五邊形
Author:
賴詩唐
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
判斷球體
四邉形 (四年級) 教師版
兩位數加法
Discover Resources
向量分解
四邊形面積問題
maths
正方体展开图的副本
固定周界的長方形的面積變化（周界是200厘米）
Discover Topics
Linear Functions
LCM and GCD
Arithmetic Operations
Cosine
Linear Programming or Linear Optimization