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congruent (SA) 2
Author:
Ricky Chan
GeoGebra
New Resources
AI 訓練教室
拼砌四邊形
美國國旗 (Codex 版)
Nested spiral octagon
兩組對邊相等和有直角的四邊形
Discover Resources
Enneper's surface
總結
圓與三角形中點的軌跡
創作一個相同周界的封閉平面圖形
凸型表面積計算（平移部分面、角度轉換法）
Discover Topics
Distributions
Cosine
Reflection
Integers
Curve Sketching