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Talor
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jingxiong lin
GeoGebra
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常见四边形是否是双心四边形
第八周作业3
百分數及其應用
比較五件物件的重量
科赫雪花
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包絡線
No.3
X and Y.
拋物線(上下型)標準式
巧克力包裝盒的夾角(三角形柱)
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Quadrilaterals
Rhombus
Ellipse
Parallelogram
Congruence