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将三角形面积一分为二
Author:
谢鹏
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
畫出對稱圖形
算柱 (兩位數)
四邊形的特性
Discover Resources
圖一
正弦函數描點作圖
判斷球體 7
Cube
Quiz on Addition and Subtraction of Directed Numbers (2)
Discover Topics
Fractions
Continuity
Curve Sketching
Solids or 3D Shapes
Combinatorics