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任務3
Author:
gklwong
Topic:
Triangles
GeoGebra
New Resources
四邉形 (四年級) 教師版
異分母分數減法
画直线等分三角形的面积
算柱 (兩位數)
拼砌四邊形
Discover Resources
waaachen
trigo ratios np2c
Interest（利息）
p11-10
立體圖
Discover Topics
Set Theory
Dilation
Quadrilaterals
Translation
Rhombus