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正十二面體內接正四面體或內接正六面體
Author:
侯杰材
GeoGebra
New Resources
異分母分數減法
判斷球體
柱體建築師
画直线等分三角形的面积
兩位數除以一位數（一）
Discover Resources
柏拉圖宇宙模型
Addition of 2 Directed Numbers
intersection: surface-surface, curve-curve
一位数加减法运算自我测评
【2020高考】全国1卷（理科） 第16题
Discover Topics
Centroid or Barycenter
Trigonometry
Natural Numbers
Intersection
Polynomial Functions