Предмет: Геометрия, автор: Nikitinz

Один из углов образованных при пересечении двух прямых в 9 раз больше другого.Найти градусную меру одного из острых углов.

Ответы

Автор ответа: stripline
0

пусть на одной прямой лежат точки A и B, на другой C и D и точка их пересечения O

< AOD = a, < DOB = b, a + b= 180

из условия a = 9*b,

тогда 10*b = 180 => b =18

 

Ответ; b = 18

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