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密鋪5
Author:
chen mingchuan
GeoGebra
New Resources
兩組對邊相等的四邊形
長方體平面投影 (Codex版)
美國國旗 (Codex 版)
球體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
找中點的坐標
半圓內切球內切圓
growth
固定周界的長方形的面積變化（周界是200厘米）
COVID-19 折線圖
Discover Topics
Vectors 3D (Three-Dimensional)
Arithmetic
Set Theory
Real Numbers
Orthocenter