Question

find the value of x in the following figure​

Answer 1

Step-by-step explanation:

$1) \: 90 + x = 130(sum \: of \: opposite \: interior \: angle \: is \: equal \: to \: exterior \: angle)\\ x = 130 - 90 = 40$

$2)y + 70 + 80 = 180(angle \: sum \: property) \\ y = 180 - 150 = 30 \\ x + y = 180(straight \: angle) \\ x + 30 = 180 \\ x = 180 - 30 = 150$