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餘弦的定理
Author:
NG Chun Yee
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
柱體建築師
兩位數除以一位數（一）
四邊形的特性
球體建築師
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Square
test08
平面区域的理解
P4構作對稱圖形
分苹果除法
Discover Topics
Terms
Random Experiments
Scalene Triangles
Rational Numbers
Linear Equations