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综合题(1) 2.
Author:
Sylvie
GeoGebra
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撒针估算面积实验
科赫雪花
三角函数 的副本
百分數及其應用
折扣
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判斷三角形
Measuring Volume 2
reflectional symmetry_6
三角形面積公式B2
三角形的重心
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Quadratic Functions
Prism
Perimeter
Curve Sketching
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