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向量加法
Author:
TwilightHex
Topic:
Vectors
GeoGebra
New Resources
双心四边形
撒针估算面积实验
常见四边形是否是双心四边形
龙形曲线-分形龙
活动三：应用性质
Discover Resources
二項分佈
駐波:相向而行的兩行進波線性疊加而成
優良作品2(孟倫)
垂心
金印的展开图
Discover Topics
Vectors 2D (Two-Dimensional)
Diagrams
Circle
Isosceles Triangles
Definite Integral