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哈里斯螺旋 - 框線版 (Harriss Spiral)
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
三位數除以一位數（二）
四邊形的特性
拼砌四邊形
sanjiaohanshu
【案例】2018年全国1卷理科12题
Discover Resources
Triangular Number 三角形數
分形几何欣赏初步：树型图
Angle between 2 planes
柱體＿
銳角三角：sin, cos
Discover Topics
Similar Triangles
Coordinates
Linear Equations
Tree Diagrams
Standard Deviation