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Proof Without Words
作者:
Šárka Voráčová
,
Steve Phelps
Drag the points in the sketch below. What do you notice? What does this prove? How does this prove it?
GeoGebra
Proof by H. Perigal (1830) and H. E. Dudeney (1917) See Cut the Knot:
Pythagorean Theorem
最新資源
z`]]
Colors for GeoGebra
רישום חופשי
從邊長辨認四邊形
Transformaciones usando coordenadas
探索資源
ellipse reflecting
COBWEB 3
Geometry - Quads
Puzzle 3
Angle Bisector
探索主題
內切圓
算術運算
指數函數
函數
矩陣