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等棍的包絡線
Author:
Wu Xiao-Ren
C為等棍AB的控制點，曲線EF為等棍AB的包絡線 Animation 啟動動畫
GeoGebra
New Resources
算柱 (兩位數)
兩組對邊相等的四邊形
直角坐標平面上的旋轉變換
sanjiaohanshu
兩位數除以一位數（二）
Discover Resources
模擬「分頁」效果
三角形全等的理由 – 題1
M05E Rate of Change 2
可調包絡圓
sym1
Discover Topics
General Quadrilateral
Constructions
Numbers
Hypothesis Testing
Root