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三垂線定理
Author:
羅驥韡 (Pegasus Roe)
Topic:
Solids or 3D Shapes
GeoGebra
New Resources
畫出對稱圖形
画直线等分三角形的面积
兩位數加法
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
Discover Resources
分數除法3: a ÷ b （包含）
拼圖遊戲
Li Shan Lan Cone Pi
gdss
百度(改良版)
Discover Topics
Median Value
Inequalities
Percentages
Random Experiments
Means