The table below shows the relationship between the side lengths of a regular
octagon and its perimeter.
Complete the table.
7.RP.2.a
10
2.
If Gabby wants to make a regular octagon with a side length of 20 inches using
wire, how much wire does she need? Justify your reasoning with an explanation of
whether perimeter is proportional to the side length.
7.RP.2.a
From EngageNY.org of the New York State Education Department. Grade 7 Mathematics Module 1, Topic A, Lesson 4. Internet. Available from https://www.engageny.org/resource/grade-7-mathJmat...; accessed 08/Sept/2015.