Предмет: Математика, автор: rucka13

Чему может быть равна третья сторона треугольника, если две его сто роны равны 6 см и 9 см?​

Ответы

Автор ответа: slava23yasya
0

Відповідь:

Покрокове пояснення:

Вона не може перевищувати 6+9= 15 см, тому що в цьому випадку існування трикутника неможливе. І не може бути менше 9-6 = 3 см з тієї ж причини.

Правило: 3-я сторона трикутника, повинна бути менше суми двох інших, але більше їх різниці.

Таким чином отримуємо нерівність:

9-6<x<9+6

3< x <15

x€(3;15)


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