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練習 - 逆時針旋轉（三角形）
Author:
Lau Sir
Topic:
Triangles
GeoGebra
New Resources
直角坐標平面上的旋轉變換
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
拼砌四邊形
三位數除以一位數（二）
Discover Resources
Construct a regular pentagon
幾何作圖動畫示範
正弦定理
迭代出根號n螺旋線
test
Discover Topics
Set Theory
Division
Solids or 3D Shapes
Poisson Distribution
Kite