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чотирикутники

дати означення

TermDefinition
Паралелограм -це чотирикутник, протилежні сторони якого попарно паралельні.
Ромб -це паралелограм, у якого всі сторони рівні.
Квадрат -це паралелограм, у якого всі сторони рівні, всі кути прямі.
Прямокутник -це паралелограм, всі кути якого прямі.
Трапеція -це це чотирикутник, дві протилежні сторони якого паралельні, а інші дві сторони — не паралельні.
Чотирикутник- це 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.
Created by: user-1756335
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