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## Area and Perimeter of Regular Polygons | CK-12 Foundation

www.ck12.org/book/CK-12-Geometry-Second-Edition/section/10.6/

Example 1: What is the perimeter of a regular octagon with 4 inch sides? ... From Examples 3 and 4, we can derive a formula for the area of a regular polygon.

## Perimeter - Math Goodies

www.mathgoodies.com/lessons/vol1/perimeter.html

In fact, in mathematics, we commonly use the following formula for perimeter of ... Another method for finding the perimeter of a regular polygon is to multiply the ...

## Octagon

jwilson.coe.uga.edu/emat6680/parsons/mvp6690/unit/Octagon/octagon.html

Students will learn the method of finding the perimeter of regular octagons, similar ... a general formula for the area, using the smaller shapes inside the octagon!

## Area and Perimeter of a Regular Octagon - Geometry Atlas

geometryatlas.com/entries/191

All measures of the interior angles of a regular octagon are 3*π/4, or 135 degrees . Expressions. Name, Input. Perimeter, Derive Input, Maple Input, MathML Input ...

## Areas and Perimeters of Regular Polygons - AlgebraLAB

www.algebralab.org/lessons/lesson.aspx?file=geometry_areaperimeterregularpolygons.xml

The area and perimeter of a regular polygon can involve relatively simple ... To derive a formula for the area of a regular polygon if the number of sides is n ...

## Mathwords: Area of a Regular Polygon

www.mathwords.com/a/area_regular_polygon.htm

Area of a Regular Polygon. The area of a regular polygon is given by the formula below. area = (½)(apothem)(perimeter) ...

## How to Calculate the Area of a Regular Octagon - For Dummies

www.dummies.com/how-to/content/how-to-calculate-the-area-of-a-regular-octagon.html

You can calculate the area of a regular octagon with the standard regular polygon ... you need to break out of that rut and look outside the perimeter of the figure.

## Perimeter of a Polygon - Web Formulas

www.web-formulas.com/Math_Formulas/Geometry_Perimeter_of_Polygon.aspx

Web Formulas ... The perimeter of a polygon is the sum of the lengths of its sides. ... 5-sided polygon (the graphic shows a regular hexagon with "regular" ...

## How to Find the Area of Regular Polygons (with Examples) - wikiHow

www.wikihow.com/Find-the-Area-of-Regular-Polygons

The perimeter is the combined length of the outline of any two-dimensional figure . ... The area of any regular polygon is given by the formula: Area = (a x p)/2,

## Regular Polygons - Properties - Math is Fun

www.mathsisfun.com/geometry/regular-polygons.html

Example: What is the exterior angle of a regular octagon? ... And since the perimeter is all the sides = n × side, we get: Area of Polygon ... More Area Formulas.

More Info

### Perimeter of a polygon - Math Open Reference

www.mathopenref.com

For regular polygons, where all the sides are the same length, the perimeter is n times the length of any side, where n is the number of sides. Or as a formula: ...

### Octagon Formula | Formula for Octagon | Formulas@TutorVista.com

formulas.tutorvista.com

A regular octagon has equal sides and internal angles. The internal ... Octagon Formula is used to calculate the area and perimeter of the octagon. Octagon.

### Geometry: Regular Octagon Calculator - Rechneronline

rechneronline.de

Calculations of geometric shapes and solids: Regular Octagon. ... Formulas: d = a * √ 4 + 2 * √2 e = a * ( 1 + √ 2 ) f = a * √ 2 + √2 ... Edge length, diagonal, height, perimeter and radius have the same unit (e.g. meter), the area has this unit ...