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Perimeter

Author:Ting Chui Yee, Anthony OR 柯志明, Angela Yan

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算柱 (兩位數)
三位數除以一位數（一）
四邊形的特性
兩位數加法
柱體建築師

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三角形的內心與內切圓
△ A B E △ABE 、 △ A C E △ACE 的內切圓半徑分別為 r 2與 r 1,兩者可以互換嗎
二元一次不等式的解區域判斷
橢圓P176例11
Uses of Trigonometry

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Centroid or Barycenter
Angles
Real Numbers
Hyperbola
Bar Chart or Bar Graph

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