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351 正多角形に現れる相似な三角形
Author:
久保塾 今治
GeoGebra
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sine-wave
standingwave-reflection-free
平均変化率
正１７角形 作図 regular 17-gon 2
standingwave-plus
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ピタゴラス
linear separation
九点円
扇形の面積
離心率
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Matrices
Linear Regression
Trigonometric Functions
Set Theory
Cylinder