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線性變換矩陣（二階）的副本
Author:
xiaodandan
,
arist
GeoGebra
New Resources
湖南省张毅郴数字教研工作室 logo
三半圓間的相切圓(Codex╱2026.10.07)
Nested spiral octagon
長方體平面投影 (Codex版)
四邊形的特性
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转网页后文字排版变乱
拋物線
PA + PB
圈圈移動
空间中两直线的位置关系
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Polygons
Translation
Set Theory
Boxplot
Continuity