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円と楕円
Author:
Bunryu Kamimura
Topic:
Ellipse
楕円をつくる二つの円。焦点もわかります。
GeoGebra
New Resources
standingwave-plus
正17角形 作図 regular 17-gon
接点の作る円は内接円
6章⑥三角柱の展開図
目で見る立方体の2等分
Discover Resources
角の3等分
三角関数の合成
Pentasection of an Angle with Ruler and Compass
utsuroi
数学I 絶対不等式となる条件
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Cone
Ratios
Random Experiments
Variance
Set Theory