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reflectional symmetry_5
Author:
maths324324
GeoGebra
New Resources
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
畫出對稱圖形
算柱 (兩位數)
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waaachen
十字交乘法
物件平移的概念
MFS Pyth Thm 1
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Quadrilaterals
Similarity Transformation or Similarity
Perimeter
Parallelogram
Sequences and Series