Question

o ângulo x na figura a seguir mede

Answer 1

Boa tarde 

45 + α  + 180 - x = 180
45 + α - x = 0
x = 45 + α  

35 +  β + 180 - x = 180
35 +  β  - x = 0
x = 35 + β

45 + α  = 35 + β
β .- α  = 10 

x = 45 + α  
x = 35 + β
2x = 80 + α + β

α + β = 2x - 80
β .- α  = 10 

0 = 2x - 80 + 10
2x = 70
x = 35°