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作者：
Steinar Johansen
GeoGebra
最新資源
Trammel of Archimedes Art
The Geometry of the Coefficients of a Quadratic Function
Domain of f(x,y)
Limaçons
Random Polar Curve (1)
探索資源
PR_PAR2B
Angle of the Sun in the Sky (Any Place, Date & Time)
Thales' theorem
oblique cylinder
Helix
探索主題
一般四邊形
Pythagoras or Pythagorean Theorem
乘法
四邊形
加法