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初中几何定理-等腰三角形三线合一
Author:
WLS
Topic:
Geometry
GeoGebra
New Resources
平行線的判定
折扣
正方形雪花图案
常见四边形是否是双心四边形
活动三：应用性质
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物理問題
畢式定理 (07)
Quartiles and Box Plot (one data set) 四分位數與框線圖（一組數據）
(正)長方體
barara magic stick
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Constructions
Ellipse
Histogram
Parallelogram
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