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Коло

Коло та його елементи

QuestionAnswer
Що таке коло? Множина точок площини, рівновіддалених від заданої точки – центра кола.
Що таке радіус кола? Відрізок, що сполучає центр кола з будь-якою точкою на колі.
Що таке діаметр кола? Відрізок, що сполучає дві точки на колі та проходить через його центр.
Яка залежність між радіусом і діаметром кола? Діаметр дорівнює двом радіусам.
Що таке хорда кола? Відрізок, що сполучає дві будь-які точки на колі.
Яка пряма називається січною кола? Пряма, яка має з колом дві спільні точки.
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