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正20面体_3

Author:ahhj45

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小テスト
正１７角形　作図　regular 17-gon 2
接点の作る円は内接円
standingwave-reflection-free
円の伸開線

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丸山良寛の問題
国語と数学のテストの共分散
M_iwate_2018_01
正八面体の展開図
３×３の魔方陣の作り方

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Parallelogram
Geometric Distribution
Function Graph
Centroid or Barycenter
Area

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