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二次方程式（動点と三角形の面積）
Author:
Hamagun
Topic:
Quadratic Equations
GeoGebra
New Resources
standingwave-reflection-fixed
二次曲線と離心率
接点の作る円は内接円
正１７角形 作図 regular 17-gon
standingwave-reflection-free
Discover Resources
共役複素数，和・積
異分母分数のたし算
平面内の1次独立な2本のベクトル
双曲線の平行移動
tan xのグラフと円の関係
Discover Topics
Straight Lines
Vectors 3D (Three-Dimensional)
Fractions
Dilation
Arithmetic Operations