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畫三角形 題1a
Author:
GeoGebra Institute of Hong Kong
Topic:
Triangles
GeoGebra
New Resources
漂亮的摇摆曲线
祖冲之的期望：内棋与外棋
三角函数 的副本
讀磅
探究三角形的全等條件
Discover Resources
七巧板
線性組合
telling the time
shihfeng的第一本Geogebra繪本
光的折射（光线自右下向左上）
Discover Topics
Cylinder
Volume
Arithmetic
Probability
Ratios