Предмет: Геометрия, автор: bogdanasekerina

Знайдіть зовнішній кут при вершині гострого кута прямокутного трикутника, якщо другий гострий кут трикутника дорівнює
1. 50
2. 20
а. 20 б. 70 в. 110 г. 130

Ответы

Автор ответа: Guppy2016
0

пусть дан прямоугольный треугольник АВF(угол А=90°) ,угол BFP - внешний угол ,смежный с углом BFA, их сумма 180 °

1) угол BFA =50°

180-50=130(°)-угол BFP

2)угол BFA =20°

180-20=160(°)-угол BFP

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