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内分点（２：１）
Author:
kyouko
Topic:
Constructions
GeoGebra
New Resources
sine-wave
サイクロイド
接点の作る円は内接円
正１７角形 作図 regular 17-gon
standingwave-reflection-fixed
Discover Resources
w=x^2+1の対応
中点七角形
内接四角形と接弦定理
入射角・反射角
Klein Bottle
Discover Topics
Linear Regression
Congruence
Diagrams
Logarithmic Functions
Geometric Distribution