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oli3D3
作者：
ivoryday
GeoGebra
最新資源
bewijs stelling van Pythagoras
Focus and Directrix
apec
The Gardener's Ellipse
Area of a Circle Illustrated
探索資源
Theorem no. 19
Heptagon Angle Sum Theorem
Matekházi 723.
Angle sum of triangle
newAAT
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矩形
3D 立體形
統計特徵
多邊形
直角三角形