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ptcc trigo level 2
Author:
Cheung Wing Chuen
GeoGebra
New Resources
兩位數除以一位數（二）
球體建築師
画直线等分三角形的面积
三位數除以一位數（一）
四邉形 (四年級) 教師版
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How to draw an ennegon with ruler and compasses?
consistent equation 3x3
八角柱(可側轉、上下轉)
橢圓包絡線1060406
拋物線4-平行四邊形法
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Symmetry
Tangent Function
Statistical Characteristics
Similarity Transformation or Similarity
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