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Penns Valley Demo
作者:
Mr. Morisani
GeoGebra
最新資源
Ellipse as Envelope - Correspondence Method
History of Maths
"Compressed" Astroid as Envelope
Rotating Points (Optical Illusion)
Piano. Keyboard.
探索資源
Siebel Applet_Basic_Calculations
cylinderical rotation
midpoint trial
parallelogram by GT
Mean of AB and CD
探索主題
幾何中心或重心
減法
角柱
雙曲線
全等