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Чотирикутники

Властивості чотирикутників

TermDefinition
Прямокутник, у якого всі сторони рівні - це Квадрат
Чотирикутник, у якого протилежні сторони попарно паралельні - це Паралелограм
Паралелограм, у якого всі сторони рівні, а діагоналі перпендикулярні і є бісектрисами кутів - це Ромб
Паралелограм, у якого всі кути по 90 градусів, а діагоналі рівні - це Прямокутник
Чотирикутник, діагоналі якого точкою перетину діляться навпіл, це Паралелограм
Чотирикутник, у якого дві сторони паралельні, а дві інші – ні - це Трапеція
Сума всіх кутів чотирикутника дорівнює 360 градусів
Чотирикутник можна вписати в коло, якщо Сума його протилежних кутів 180 градусів
Чотирикутник можна описати навколо кола, якщо суми його протилежних сторін рівні
Created by: user-2006160
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