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quiz 9.1 1(d)
Author:
lamanleung
GeoGebra
New Resources
找出對稱軸
兩組對邊相等的四邊形
錐體建築師
GeoGebra笔记功能体验课件
球体的体积推导（优化版）
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滾動
chap. 1 by ck
Angle Sum of Triangle
gjc102a19 三角形的對折
三角形三邊長
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Quadrilaterals
Statistical Characteristics
Polygons
Median Line
Angles