Students learn that the perimeter of a polygon is the sum of the lengths of its sides
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
F. Find the perimeter of a pentagon
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