Answer:
30
Step-by-step explanation:
Since you know all the angles have to add up to 180 degrees, you add 102 and 48. That is 150. 180 degrees-150 degrees equals 30 degrees.
Answer:
i believe the correct answer is x+90+63=180
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Reason: 4, 8, 12, 16, now add 4 more it would make it 20 because 16 + 4 would be 20