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vector addition and subtraction
Author:
sealion1215
GeoGebra
New Resources
兩組對邊相等的四邊形
四邊形的特性
判斷球體
畫出對稱圖形
GeoGebra笔记功能体验课件
Discover Resources
同心圓和線段-3(線段到最外圓有小圓)
椭圆的定义
容量(閱讀不同刻度的量杯)
学用数学（分季）
小五_近似值
Discover Topics
Functions
Sine
Line Segment
Fractal Geometry
Fractions