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内分点（２：１）
Author:
kyouko
Topic:
Constructions
GeoGebra
New Resources
二次曲線と離心率
sine-wave
正１７角形 作図 regular 17-gon
円の伸開線
接点の作る円は内接円
Discover Resources
「四角形のしきつめ」から面積を求める
Regular Tetrahedron sea and atmosphere
動点
瞬間の速さ
等積変形の活用
Discover Topics
Logic
Linear Functions
Correlation
Mathematics
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