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鐘面、數字鐘、報時互換
Author:
marcolee201314
GeoGebra
New Resources
兩組對邊相等的四邊形
柱體建築師
球体的体积推导
兩位數加法
三位數除以一位數（一）
Discover Resources
垂直平分線
三角形的高與面積
傅立葉級數 (2)
Activity 3
数学之美
Discover Topics
Normal Distribution
Median Line
Circumcircle or Circumscribed Circle
Plane Figures or Shapes
Numbers