Number 1 will be b=c is alternate after c=a is corresponding (parallel) then you do sum of all triangle and join
C + E + D = 180
28+ E + 42 = 180
E + 70= 180
E = 180-70
E = 110
Sum of all triangle is 110
And write all the needed words according to what you are taught
I guess the question is asking this
B=C
C=A
E= 110