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拉霸梯形
Author:
澎湖縣中正國小
GeoGebra
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活动三:应用性质
双心四边形
第八周作业1
盈利與虧蝕
GeoGebra数学资源(4-8年级)
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三角形面積.Area of Triangle
小二三 畫時鐘
第1章知识结构框图
向量與坐標
模拟龟兔画板
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Rhombus
Surface
Polygons
Algebra
Isosceles Triangles