Question

Three lines AB, CD and EF intersect at O. If a = 30 degrees and b = 50 degrees , find c, d, e, f. ​

Answer 1

Given,

a = 30°

b = 50°

Therefore,

d = a = 30° |Vertically opposite angles

e = b = 50° |Vertically opposite angles

c = 180 - (d + e) |Linear pairs of angles

= 180 - (30 + 50)

= 180 - 80

= 100°

f = c = 100° | Vertically opposite angles