How do you find the area of a polygon?
How do you find the area of a polygon?
The formula to calculate the area of a regular polygon is, Area = (number of sides × length of one side × apothem)/2, where the value of apothem can be calculated using the formula, Apothem = [(length of one side)/{2 ×(tan(180/number of sides))}].
What is the formula to find the perimeter of a polygon?
We know that the perimeter of a regular polygon is calculated by the formula, Perimeter = (number of sides) × (length of one side).
How do you find area of a pentagon?
The basic formula that is used to find the area of a pentagon is, Area = 5/2 × s × a; where ‘s’ is the length of the side of the pentagon and ‘a’ is the apothem of a pentagon.
How do you find an area of a figure?
The simplest (and most commonly used) area calculations are for squares and rectangles. To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.
What is the area of a polygon with 5 sides?
How do you find the perimeter of an irregular polygon?
For an irregular polygon, the perimeter is calculating by adding together the individual side lengths. For example, the perimeter of an irregular pentagon whose side lengths are; 5 cm, 4 cm, 6 cm, 10 cm, and 9 cm. = 34 cm.
How do you find the perimeter of a regular polygon?
The perimeter of any polygon can be calculated by finding the length of each side individually, then adding all of these lengths together. This is the most straightforward way to find a polygon’s perimeter and, in shapes where no two of the sides are equal, it is usually the only accurate way to do so.
How do you calculate the area of an irregular polygon?
It is to determine the area of an irregular polygon. The generally accepted manner for finding the area of an irregular polygon is to break it up into triangles and possibly a rectangle, then calculate each and add the totals. Enter the length of the sides for each triangle you use; up to 10 of them.
How do you calculate area of a quadrilateral?
To find the area of a quadrilateral, find the height and width of the shape (for rectangles, squares, parallelograms and trapezoids), and then multiply the two numbers together. For rhombuses and kites, find the length of the diagonals, multiply the diagonals, and divide by two.
How do you calculate the angles of a polygon?
The formula for finding the total measure of all interior angles in a polygon is (‘’n’’ – 2) x 180, where ‘’n’’ is the number of sides, as well as the number of angles, the polygon has. Some common polygon total angle measures are as follows: The angles in a triangle (a 3-sided polygon) total 180 degrees.
