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jaycheung2016plk
GeoGebra
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第八周作业1
常见四边形是否是双心四边形
龙形曲线-分形龙2
中华人民共和国国旗
科赫雪花
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遊戲與圖像
test
讀磅
Time
畢氏定理-面積切割法
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Curve Sketching
Isosceles Triangles
Similarity Transformation or Similarity
Tree Diagrams
Rational Numbers