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正四棱锥的外接球

Author:向天笑

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拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等的四邊形
錐體建築師
兩組對邊相等和有直角的四邊形

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比和比值
Primary School Mathematics Collection
教學－棱柱摺紙樣式
-1/8 ≤ cosα cosβ cosγ ≤ 1
認識角度

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Translation
Root
Step Functions
Solids or 3D Shapes
Constructions

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