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不規則圖形的周界(凹)
Author:
Ng Ka Man
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
國旗 (作圖步驟直接餵給 Claude)
Nested spiral octagon
Fibonacci Clock
直角坐標平面上的旋轉變換
Discover Resources
正n邊形內角與外角
乘法
中心对称和中心对称图形
Copy of 均分除法（分數÷整數）
立方體展開互動版v1.0
Discover Topics
Secant Line or Secant
Real Numbers
Continuity
Trapezoid
Linear Functions