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n等分单位圆作正弦曲线
Author:
许亚平
Topic:
Trigonometric Functions
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
球體建築師
四邉形 (四年級) 教師版
四邊形的特性
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Addition and Subtraction of Directed Numbers (2) 有向數加減(2)
軌跡,摺紙,滾動,實驗觀察,曲線
音調與空氣柱
angle at centre vs angle at circumference
畢氏定理證明（Ｉ）
拋物線2--焦點法
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Rhombus
Kite
Mathematics
Circle
Numbers