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宋聿數學 097學測11
Author:
宋秉祐
GeoGebra
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常见四边形是否是双心四边形
盈利與虧蝕
双心四边形
球体的截面
撒针估算面积实验
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蝴蝶定理推廣證明1
千年曆
gjh-g06-01 乘法公式綜合應用
凸透镜成像
作三角形
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Root
Parabola
Ratios
Trapezoid
Parallelogram