Question

angles sum please find it​

Answer 1

As they are parallel x = opposite angle = 100°

Now using formula

Sum of all sides in a triangle = 180°

40 + 100 + y = 180

y = 180 - 140

y = 40°

Answer 2

As they are parallel x = opposite angle = 100°

Now using formula

Sum of all sides in a triangle = 180°

40 + 100 + y = 180

y = 180 - 140

y = 40°