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雙橢
Author:
Lin Ching Chieh
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
算柱 (兩位數)
畫出對稱圖形
找出對稱軸
Discover Resources
橫斷式研究之樣本數估計（Outcome為odds ratio）
畢氏定理
gyzpa 拋物線焦點準線
同位角__垂直平行綫
地球上的直線距離
Discover Topics
Sine
Ellipse
Rotation
Set Theory
Conditional Probability