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D27 27.
Author:
Sylvie
GeoGebra
New Resources
科氏力 (Coriolis Force)
常见四边形是否是双心四边形
百分數及其應用
平行線的斜率
盈利與虧蝕
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Symmetric設計對稱圖案(一條對稱軸)斜2
test
構作對稱圖形_FK1
平移圖形後計算面積
表内除法
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Subtraction
Straight Lines
Optimization Problems
Diagrams
Definite Integral