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海市蜃樓現象
Author:
Jia-ming Shiu
拉動三條折射率 可得到光的路徑
GeoGebra
New Resources
判斷球體
三位數除以一位數（一）
兩位數加法
拼砌四邊形
畫出對稱圖形
Discover Resources
全等三角形: 重溫
lab5_task3
鏡面反射光線
testing
扇形動畫
Discover Topics
Upper and Lower Sum or Riemann Sum
Similar Triangles
Symmetry
Piecewise Functions
Dilation