ISEE Upper Level Math : How to find the length of a side in other polygons

Study concepts, example questions & explanations for ISEE Upper Level Math

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Example Questions

Example Question #27 : Isee Upper Level (Grades 9 12) Mathematics Achievement

The perimeter of a regular octagon is one mile. Give the sidelength in feet.

Possible Answers:

Correct answer:

Explanation:

One mile is equal to 5,280 feet, so divide this by 8:

 feet

Example Question #28 : Isee Upper Level (Grades 9 12) Mathematics Achievement

What is the sidelength, in feet and inches, of a regular octagon with perimeter  feet? 

Possible Answers:

Correct answer:

Explanation:

 feet is equivalent to  inches. Each side of a regular octagon, an eight-sided figure, measures one-eighth of this:

Each side of an octagon with perimeter  feet measures 

 inches.

Since

,

this is equal to .

Example Question #1 : How To Find The Length Of A Side In Other Polygons

In a septagon, each of the  sides are equal to one another. If the perimeter is  feet, what is the length of one of the sides?

Possible Answers:

Correct answer:

Explanation:

If the perimeter of a septagon, in which each side is equal to the other, is 98, the length of each side will be 7 feet because 98 divided by 7 is 14. 

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