area of polygon formula

Area of a cyclic quadrilateral. Regular Heptagon. Then add those areas together. Hence this can be used as a tool to identify the cyclic path or sequence of a given set of points forming a polygon. For a square or rectangle, multiply the length of the base by the height. equilateral and equal angles i.e. Not sure which formula you mean. By Mark Ryan . Using these formulas, the area of any polygon can be found by dividing the polygon into triangles. In case the students are preparing for any kind of test, then they can start preparation from this Area of the Polygon Worksheet. The following regular nonagon has an apothem $a$ of $2.06$ cm and its side $l$ measures $1.5$ cm, calculates its area: The perimeter of the nonagon is calculated by multiplying the length of the side $l$ by its number of sides, which in this case is $9$: $$P = l\cdot 9 = 1.5 \cdot 9 = 13.5 \ cm$$, $$A = \cfrac{P\cdot a}{2} = \cfrac{13.5 \ cm \ \cdot 2.06 \ cm}{2} = 13.905\ cm^{2}$$, So the area of our nonagon is $13.905 \ cm^{2}$. How can I calculate the area of an irregular polygon? How to Find the Area of a Polygon? If you have a triangle with a base of 10 and a height of 8, then the area = 1/2 x 8 x 10, or 40. We can always divide a polygon into triangles. Regular Polygon Formulas. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/7\/70\/Calculate-the-Area-of-a-Polygon-Step-1-Version-4.jpg\/v4-460px-Calculate-the-Area-of-a-Polygon-Step-1-Version-4.jpg","bigUrl":"\/images\/thumb\/7\/70\/Calculate-the-Area-of-a-Polygon-Step-1-Version-4.jpg\/aid434515-v4-728px-Calculate-the-Area-of-a-Polygon-Step-1-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"