Answer:
The answer is "The second choice".
Step-by-step explanation:

Formula:


Hello!
The sum of all angle measures in a heptagon in 900°. We will subtract all of these angles from 900 to find our answer.
900-146-122-142-140-110-142=98
x=98°
I hope this helps!
Answer:
D
Step-by-step explanation:
Answer: 39
Step-by-step explanation:
180-(39+102)
180-141
39