Question

find x and y in each of the following

Answer 1

in (i) X+60=100 (sum of opp.interior angles =exterior angle)
X=40
100+Y=180(angle sum property)
Y=80


in(ii)3X+2X+X=180(angle sum property)
X=30
3X+2X=Y(sum of opp.interior angles =exterior angle)
Y=150


(III)Y+120=180(linear pair)
Y=60
X+60=100(sum of opp.interior angles =exterior angle)
Y=40


I hope this will help you