Equiangular. They are all 90 degrees but they don’t have the same length of sides so they are equiangular meaning equal angles.
Answer:
common difference increases by 2 times
d = (2×12) = 24

Answer:
-1
Step-by-step explanation:
9/3+4(6-7)
3+4(-1)
3+(-4)
3-4
-1