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三角形の角の二等分線と比
Author:
田中利則
GeoGebra
New Resources
接点の作る円は内接円
円の伸開線
standingwave
正１７角形 作図 regular 17-gon
コイン投げと樹形図
Discover Resources
拡大と縮小
重心Gの垂足円
立方体の切断 p168
ex20170209
normal distribution
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Mathematics
Pyramid
Tangent Line or Tangent
Continuity
Combinatorics