Respuesta :

EISHANnyc

Answer:

d=56, a=129, b=17

Step-by-step explanation:

so 34+d = 90

d is 56

a would be 180-51(supplementary)

so a would be 129

for b, you have to add all 3 angles and they have to equal 180

so it would be 34+129+b=180

b would be 17