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平行四邊形
Author:
謝昀潔
GeoGebra
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圓的切線方程
平行線的判定
百分數及其應用
异形操场
双心四边形
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量角器3
量度長度(厘米)
向量分解的副本
正角、負角|Positive angles & Negative angles
相似三角形的构造01.许兴华数学
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Geometric Distribution
Perimeter
Similarity Transformation or Similarity
Intersection
Trigonometric Functions