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Proof Without Words
Author:
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
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רישום חופשי
bewijs stelling van Pythagoras
Ringed Polyhedra
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Exploring the meaning of the definite integral
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Arctan
Homothety in Three Tangent Circles
Modification 1
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Arithmetic
Poisson Distribution
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Logarithmic Functions
Limits