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近似值:小數位及有效數字
Author:
Alex CHIK
點擊藍色點或紅色點來找出所輸入數字的上捨入值和下捨入值。
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
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兩組對邊相等的四邊形
四邊形的特性
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
拼砌四邊形
Discover Resources
高美溼地
Midpoint Theorem and Intercept Theorem
花瓣紋章
線對稱圖形
極落戰艦-初階版
Discover Topics
Sequences and Series
Coordinates
Complex Numbers
Set Theory
Solids or 3D Shapes