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Author:
yeungsm
,
###
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
常见四边形是否是双心四边形
盈利與虧蝕
中华人民共和国国旗
龙形曲线-分形龙2
活动三:应用性质
Discover Resources
平行四邊形中點連線及分角線交點連線形狀
題 7
test01
Trapezoid1
六年級_正方體截面
Discover Topics
Variance
Similar Triangles
Tangent Line or Tangent
Similarity Transformation or Similarity
Pythagoras or Pythagorean Theorem