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Member for
4 years 1 monthAge: 13-16
Level: 8
Language: Russian
(ru)
ID: 97117
13/04/2020
Country code: RU
Country: Russia
Main content: Свойства (1073017)
From worksheet author:
четыре замечательные точки
Other contents:
биссектриса, серединный перпендикуляр
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