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パップスの問題（楕円）
Author:
Bunryu Kamimura
Topic:
Ellipse
赤い線は楕円の準線（焦点の極線）
GeoGebra
New Resources
目で見る立方体の2等分
standingwave-reflection-free
正１７角形 作図 regular 17-gon
対数螺旋
standingwave
Discover Resources
ベクトル値函数と媒介変数表示
ΣΣｋ=1+3+6+
行列の意味
SIDE 例題26
２次関数 β 演習４９
Discover Topics
Scalene Triangles
Mode
Difference and Slope
Means
Multiplication