Students find the perimeter of a pentagon by finding the sum of its sides. They simplify the addition expression by using the associative property to solve
A. Identify the perimeter of a polygon
B. Measure and add to find the perimeter of a polygon
C. Find the perimeter of a triangle
D. Find the perimeter of a rectangle
E. Find the perimeter of a polygon
G. Find the length of an unknown side of a triangle
H. Find the length of an unknown side of a quadrilateral
I. Find the perimeter of a equal-sided polygon using multiplication