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Принцип Гюйгенса
Author:
Алексей Евгеньевич Сорокин
Демонстрация принципа Гюйгенса © Сорокин А.Е.
GeoGebra
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Proving Triangles Congruent (2): Multi-Step Transformations
Constructing the Perpendicular Line Through a Point on the Line
Rolle's Theorem
Calendar Puzzle
apec
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DSE 2015 Math 19
Geometric Constructions
Exercise 11D Q5
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