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线面g
Author:
何美华
Topic:
Solids or 3D Shapes
GeoGebra
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兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩位數除以一位數（二）
找出對稱軸
小数 的副本
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task2
習題1.1 (P16) _ 2016.10.02
拋物線1--焦點法
橢圓1--同心圓法
我的第一个绘本
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Ellipse
Rhombus
Sine
Geometric Transformations
Similar Triangles