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Trigonometric Ratios of Special Angles 特殊角的三角比
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
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算柱 (兩位數)
三位數除以一位數（一）
画直线等分三角形的面积
兩位數加法
兩組對邊相等的四邊形
Discover Resources
簡單動畫
GeoGebra桌機版安裝
正三角形
圖形周界_H
Solve ax + b = cx + d
Discover Topics
Prism
Difference and Slope
Circumcircle or Circumscribed Circle
Congruence
Functions