56, you are dividing by -2 each time
Triangle,quadrilateral,pentagon,hexagon,octagon,decagon.
Triangle quadrilateral octagon - regular
rest are not. Someone might need to check me if im right about regular and irregular :) Hope I helped
The answer is 216
Hope this helps
Answer:
Step-by-step explanation:

The answer would be C. 5(5) + 2(2) = 29
(5) + 4(2) = 13