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6巧算周界
Author:
maths_p5
GeoGebra
New Resources
活动三：应用性质
平行線的判定
中华人民共和国国旗
异形操场
常见四边形是否是双心四边形
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color
複合形體的表面積(凹形)
量詞
垂直線(方格版)
探究判定全等三角形的条件（ SSA? & HL！）
Discover Topics
Indefinite Integral
Triangles
General Quadrilateral
Statistical Characteristics
Hypothesis Testing