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拋物線：切線與弦中點
Author:
羅驥韡 (Pegasus Roe)
Topic:
Parabola
GeoGebra
New Resources
錐體建築師
兩組對邊相等的四邊形
直角坐標平面上的旋轉變換
三位數除以一位數（二）
四邊形的特性
Discover Resources
圓柱動態展開圖
直線系
spinral
gyzpa 拋物面鏡的反射
拋物線相似
Discover Topics
Scalene Triangles
Subtraction
Geometric Transformations
Rotation
Kite