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proof*5 張華炘
Author:
郭亮偉
GeoGebra
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兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
四邉形 (四年級) 教師版
算柱 (兩位數)
兩組對邊相等的四邊形
Discover Resources
正方形
ｃｉｒｃｌｅ ｓｅｇｍｅｎｔ
三角測量01
Hoja de prueba
转动中的杠杆
Discover Topics
Cosine
Standard Deviation
Vectors 2D (Two-Dimensional)
Linear Equations
Sphere