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円の面積はなぜ半径を2回かけるのか？ver4
Author:
T.Fujimaki
GeoGebra
New Resources
接点の作る円は内接円
目で見る立方体の2等分
standingwave-reflection
sine-wave
正１７角形 作図 regular 17-gon
Discover Resources
Ex_108
長方形を正方形にする Rectangle⇔Square
院生室 縦
回転移動 のコピー
三角形の内角の和
Discover Topics
Variance
Bar Chart or Bar Graph
Differential Equation
Special Points
Arithmetic Mean