A regular octagon is a eight sided polygon where each side is of equal length.
Perimeter = 8a
Area = ( 2 + 2√2 )a2
Perimeter and Surface Area Formulas
By Anne Marie Helmenstine, Ph.D., About.com Guide
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- Triangle Perimeter and Surface Area Formulas
- Square Perimeter and Surface Area Formulas
- Rectangle Perimeter and Surface Area Formulas
- Parallelogram Perimeter and Surface Area Formulas
- Trapezoid Perimeter and Surface Area Formulas
- Circle Perimeter and Surface Area Formulas
- Ellipse Perimeter and Surface Area Formulas
- Hexagon Perimeter and Surface Area Formulas
- Octagon Perimeter and Surface Area Formulas
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