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reflection
作者：
dawnalarson
主題：
反射
GeoGebra
最新資源
Mondrian's Puzzle
The Gardener's Ellipse
רישום חופשי
bewijs stelling van Pythagoras
Classifying Triangles
探索資源
What's the number? -- decimal version
Non-obvious Geometrical Properties of a Triangle
Perpendicular Lines (point on)
IMO_2015_P3
Area and Perimeter - Make Your Own Figure
探索主題
圓錐曲線
矩陣
菱形
直角三角形
函數