Question

three coplnar lines intersect in a common point , if a=40degree , b=80degree find the value of c,d,e and f​

Answer 1

a = 40°

b = 80°

Now, a, b and c form a linear pair

hence a + b + c = 180°

40° + 80° + c = 180°

120° + c = 180°

c = 180° - 120°

c = 60°

Now, c and f are vertically opposite angles

Therefore, c = f = 60°

f= 60°

b is vertically opposite to e

b = e

e=80°

a is vertically opposite to d

a=d

d = 40°

So, c = 60°, d = 40°, e = 80° and f = 60°