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正弦定理验证
Author:
junfeilx
GeoGebra
New Resources
拼砌四邊形
近似值：有效數字
Earth with coastline
找出對稱軸
Nested spiral octagon
Discover Resources
task 1
Triangle
生活中的平面圖形關係─平行
GGB9
計算圓弧長度
Discover Topics
Rectangle
Triangles
Conic Sections
Linear Equations
Cone