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李冠逸 拋物面反射
Author:
kevin20020905
GeoGebra
New Resources
兩位數加法
柱體建築師
球体的体积推导（优化版）
球體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
腳踏車輪圈
橢圓的定義畫圖
三角函數
容積盒子(加蓋)
x^3+y^3-3xy
Discover Topics
Logarithm
Fractal Geometry
Logic
Bar Chart or Bar Graph
Trapezoid