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三角形內角和180度
Author:
范欣茹
Topic:
Triangles
GeoGebra
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算柱 (兩位數)
画直线等分三角形的面积
三位數除以一位數（二）
球體建築師
異分母分數減法
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Introduction to Rectangular Coordinates 直角坐標簡介
正n邊形的組合
可調包絡圓
Ex5D#8
翰林數學_2下_CH4-1_截線與截角的意義
Discover Topics
Kite
Expected Value
Equations
Centroid or Barycenter
Similarity Transformation or Similarity