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正弦余弦刻度尺
Author:
丁银杰
Topic:
Trigonometry
GeoGebra
New Resources
兩位數加法
兩組對邊相等的四邊形
兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
画直线等分三角形的面积
Discover Resources
Escher 階梯
封閉圖形填顏色
Tool4P
滾球平台
旋轉圓
Discover Topics
Standard Deviation
Statistics
Square
Real Numbers
Hyperbola