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劉德晧proof14
Author:
郭亮偉
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
小数 的副本
Earth with coastline
算柱 (兩位數)
四邉形 (四年級) 教師版
Discover Resources
百分數：買賣問題（Java 版）
Conic section-ellipse&hyperbola
Copy of sin(x) 的函數圖形
Solve ax + b = c | 解方程（樣式： ax + b = c ）
活工(二)Q3
Discover Topics
Scatter Plot
Reflection
Vectors 3D (Three-Dimensional)
Boxplot
Algebra