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三角形の角の二等分線と比の定理
Author:
Tsuyoshi Yamamoto
GeoGebra
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sine-wave
standingwave-reflection-free
円の伸開線
対数螺旋
接点の作る円は内接円
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メネラウスの定理
アルキメデスの積尽法
垂足三角形の垂足三角形
垂直二等分線 平行四辺形
doppler
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Normal Distribution
Ratios
Statistics
Difference and Slope
Fractions