Answer:
the answer is 47
Step-by-step explanation:
first you would add the sum of angle A to the sum of angle D. next you would subtract 180 from 133 to get 47. then you can check your answer by adding 34 and 47 which is 81 and then subtract that from 180 to get the measure of angle D.
34+99=133: 180-133=47
34+47=81: 180-81=99
Hope this helps.
