Question

find the angle x in the following figure​

Answer 1

side of angle 150° join is a line

so its a linear pair

150+30=180

traingle full angles sums is 180

30+100+50=180

x angles join with one angle of traingle its become 180(linear pair)

• $x + 50 = 180$
• $x = 180 - 50 = 130$