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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
Average Distance
Graph of y = a(x − h)² + k
Traffic Cone
seo tool
Angles of Intersecting Lines
Discover Resources
Evaluare Națională Varianta 4.
รูปคลี่พีระมิด
วงรี
isosceles trapezoid
Pappus area-2
Discover Topics
Statistics
Circumcircle or Circumscribed Circle
Reflection
Histogram
Trigonometric Functions