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動態軌跡
Author:
Ching-Hui Chou
GeoGebra
New Resources
三位數除以一位數（一）
找出對稱軸
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
Discover Resources
橫向橢圓
Circumcentre
垂心軌跡
example 1_sun
sin(x) 的函數圖形 的複本
Discover Topics
Scalene Triangles
Arithmetic
Sphere
Square
Differential Equation