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立体に潜む平面②
Author:
斎藤 幸弘
GeoGebra
New Resources
正１７角形 作図 regular 17-gon
斜めドップラー
standingwave-reflection
接点の作る円は内接円
sine-wave
Discover Resources
ピラミッドの造り方
再び円周率の求め方ーその２
三角比0-90
数学I 2次関数の符号(2)
素敵なグラフ
Discover Topics
Logarithm
Parallelogram
Distributions
Triangles
Definite Integral