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Problem 1 from the 1994 Nordic Contest
Author:
Alexander Bogomolny
Topic:
Angles
GeoGebra
New Resources
Ellipse as Envelope - Correspondence Method
Spinning cube - Belt Trick
Parallel or Not? (V2)
van Aubel's Theorem
"Compressed" Astroid as Envelope
Discover Resources
Corresponding
Reflective property of a parabola
Practice 2
Triangle Congruence Activities
Диофантовое уравнение
Discover Topics
Unit Circle
LCM and GCD
Coordinates
Integers
Surface