You approximate it with many small rectangles. This is known as integration.
To find the area of any parallelogram, whether it be irregular or not, just multiply the base by the height. * Ap = bh
For any irregular shape, you must divide it into shapes that are regular and find the area of those then add up all of the parts to find the area of the whole.
by subtracting
To find the area of irregular shapes, first, we need to divide the irregular shape into regular shapes that you can recognize such as triangles, rectangles, circles, squares and so forth. Then, find the area of these individual shapes and add them to get an area of irregular shap
Divide the area into regular shapes and find their areas then add them all up together
You can find the area when you look at the angles and measure it to see if they are all the same size.
look it up in a math book
For example, you can divide the polygon into triangles, and calculate the area of each triangle.
You get the area by using formulas. There is usually a specific formula to find the area of each shape. Some irregular shaps may not have a formula.
First of all, there's no such thing as an "irregular square". If it's irregular, then it's not a square. You'd need a complete description to find its area. Like the lengths of all the sides, or else the size of all the angles plus the length of at least one side.
I assume you mean the calculation required. Split the irregular shape up into shapes for which you can find the area (eg rectangles, triangles), then the area of the shape is the sum of the areas of the smaller shapes.
You get the area by using formulas. There is usually a specific formula to find the area of each shape. Some irregular shaps may not have a formula.