Question
The figure is made up of straight lines. Given that ∠b is four times that of ∠d, find
  1. ∠b
  2. ∠c
  3. ∠d
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

(c)

Click button first when a symbol is required. X

The figure is made up of straight lines. Given that ∠b is four times that of ∠d, find
  1. ∠b
  2. ∠c
  3. ∠d