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Чотирикутник, у якого протилежні сторони паралельні Паралелограм
Фігура, яка складається з чотирьох точок (жодні три з них не лежать на одній прямій) і чотирьох відрізків, які з'єднують послідовно ці точки і не перетинаються. Чотирикутник
Прямокутник, усі сторони якого рівні Квадрат
Чотирикутник, дві протилежні сторони якого паралельні, а дві другі не паралельні Трапеція
Паралелограм, усі сторони якого рівні Ромб
Created by: 107611959819850