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同心圓
Author:
施奕瑄
GeoGebra
New Resources
球體建築師
三位數除以一位數（一）
第八周作业
柱體建築師
異分母分數減法
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Untitled1
Drawing quadrilaterals on the grid or the pinboard
蠟蠋成像
Geometry: Types of Angles 2 (幾何：角的種類 2)
橢圓代數性質,光學性質,生活應用
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Subtraction
Kite
Means
Surface
Histogram