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用極座標做時鐘的副本
Author:
YuanYee
,
唐宗浩
做一個摹擬時鐘如何?
GeoGebra
修改這個時鐘?
New Resources
畫出對稱圖形
找出對稱軸
兩組對邊相等的四邊形
三位數除以一位數（二）
直角坐標平面上的旋轉變換
Discover Resources
隨機漫步
Sequence指令練習(逐一套疊三角形)
希瓦定理
ego-motion
伊斯蘭窗花 0410
Discover Topics
Trapezoid
Upper and Lower Sum or Riemann Sum
Percentages
Rhombus
Normal Distribution