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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
New Resources
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
အခြေခံ data အခေါ်အဝေါ်များ
Limaçons
Astroid
Shaders examples
Discover Resources
Watt's linkage
Unit 2 Test Alternate Interior Angles
Tangent Segments Investigation
Scale Simulator (Weight & Mass)
เกมร้อยแปดสิบ IQ
Discover Topics
Congruence
Inequalities
Binomial Distribution
Right Triangles
Planes