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Problem 1 from the 1994 Nordic Contest
Author:
Alexander Bogomolny
Topic:
Angles
GeoGebra
New Resources
Introduction
Rotating Points (Optical Illusion)
van Aubel's Theorem
Napoleon's Theorem
Construct a Square
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PreAlgebra
M1TC Lesson 13 Exit Ticket
CAS Geogebra
שעון חול מים
Visual Percentages
Discover Topics
Planes
Interest Calculation
Parametric Curves
Dilation
Circumcircle or Circumscribed Circle