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圖三 的複本
Author:
Michael Ma
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
直角坐標平面上的旋轉變換
四邉形 (四年級) 教師版
画直线等分三角形的面积
三位數除以一位數（二）
Discover Resources
三角形面積
內心與角平分線觀察
gjh-g05-00 平方差公式
DSE Circle-ACT01C Distance between Chords and Centre of a Circle
旋轉方塊
Discover Topics
Linear Programming or Linear Optimization
Conic Sections
Quadratic Equations
Right Triangles
Means