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接弦定理
Author:
Tomoyuki Kusaka
GeoGebra
New Resources
正１７角形 作図 regular 17-gon 2
sine-wave
接点の作る円は内接円
フーリエ級数展開
二次曲線と離心率
Discover Resources
Gradient Vector Field
二次関数の最大値最小値
正負の数（代数和）改
長方形の折り返し(mobile版)
楕円に外接する四角形の性質
Discover Topics
Statistical Characteristics
General Quadrilateral
Line Segment
Integral Calculus
Real Numbers