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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
aperiodic monotile construction_step by step
Monkey typing Shakespeare's complete works
Rings of circles
Exploring Simple Loci 探究簡單軌跡
Taylor Polynomial
Discover Resources
Slope and y-intercept
Test
devine - g period - centroid
สามเหลี่ยมพีทาโกรัส ฉบับที่ 1
Scale Drawing of a Circle
Discover Topics
Rectangle
Surface
Binomial Distribution
Numbers
Addition