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周长相等,正方形,长方形和正三角形,圆面积大小比较
Author:
冯圣军
Topic:
Square
,
Triangles
GeoGebra
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GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
sanjiaohanshu
畫出對稱圖形
判斷球體
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Cube in Perspective 正方體的透視
quiz 9.1 2(d)
太极图
乘加挑戰題
时钟
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Parabola
Ratios
Statistics
LCM and GCD
Trigonometric Functions