Question 987678
x=length of side; n=number of sides
perimeter=(number of sides)(length of side)
Perimeter=nx
perimeter(square)=4x
Regular polygon with perimeter 2 times square:
perimeter=2 times perimeter of square=2(4x)=8x
Perimeter=nx
8x=nx
8=n Number of sides=8
ANSWER 1: The polygon is an octagon.
.
length of square=x 
perimeter=3x
perimeter=nx
3x=nx
n=3 Number of sides=3
ANSWER 2: The polygon is a triangle.