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任務5
Author:
gklwong
Topic:
Triangles
GeoGebra
New Resources
画直线等分三角形的面积
三位數除以一位數（二）
兩組對邊相等的四邊形
四邊形的特性
畫出對稱圖形
Discover Resources
平行四邊形面積
操場
百變火柴
圆柱截方
黃金三角形
Discover Topics
Functions
Linear Programming or Linear Optimization
Real Numbers
Median Line
Combinatorics