Answer:
20 sides
Step-by-step explanation:
The formula that relates interior angles with number of sides is:

Where
n is the number of sides.
We know each interior is 162 degrees, so we substitute and cross multiply and solve for n:

THus, the polygon has 20 sides
Answer:
the are half this equation is 10, thank you for your time
You first distribute the 2 and (5x+5) then you subtract the numbers with variables then subtract the numbers without variables.
Go up on the graph 9 times and then to the side 15 times.