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椭圆画法2定义法
Author:
冯伟冀
GeoGebra
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兩位數加法
第八周作业
畫出對稱圖形
異分母分數減法
兩位數除以一位數（二）
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題 7
謝爾賓斯三角形
利用Geogebra說明y=ax2＋bx＋c圖形性質
gjc091b18 圓的割線
分數與百分數的分別
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Expected Value
Pythagoras or Pythagorean Theorem
Isosceles Triangles
Geometric Distribution
Percentages