Answer:
<h2>
C) 4</h2>
Step-by-step explanation:
The nth term of arithmetic sequence is 
So:

Answer:
A
Step-by-step explanation:
2 + 12 = 14 = 4 + 10
Answer:
900
Step-by-step explanation:
Sum of interior angle for a polygon = (n-2)180
7 sides
=(7-2)180
=5*180
=900
I think the alternative b is
It would be a right angle because all the angles are less than 90 degrees