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題 3 的複本
Author:
HYHivy
,
GeoGebra Institute of Hong Kong
計算下圖的面積。
GeoGebra
New Resources
直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
畫出對稱圖形
近似值：有效數字
Fibonacci Clock
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正方形和長方形有甚麼特性？
題七
等腰三角形內嵌矩形
Addition and Subtraction of Polynomials(多項式的加減法)
尺规作图得到黄金三角形和黄金矩形
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Histogram
Trigonometric Functions
Ratios
Expected Value
Fractions