Question

please solve , it's urgent ​

Answer 1

Answer:

180 - 80 = 100° by linear pair

180 - 90 = 90° by linear pair

100 + 90 + (180-X) + (180-X) = 360

180-x + 180-x = 360 - 190 = 170

2(180-X) = 170

180 - X = 170/2

180-X = 85

X = 180 - 85

= 95°