To calculate the area of an irregular shape, the shape needs to be divided into regular shapes that can have their area easily calculated; the area of the regular shapes can be added up to equal the total area of the irregular shape. One way to calculate the area of a regular shape, namely a rectangle, is to multiply the length of the rectangle by its width. Different methods are used to calculate the areas of other regular shapes, such as circles, triangles and squares.
Know MoreMost irregular shapes are a combination of two or more regular shapes. These shapes could be a result of a triangle and a rectangle or two rectangles. The shape should be divided into two or more separate parts that form regular shapes. It is important that the dimensions of the irregular shape should be the same size when they are divided into regular shapes. This is especially important in geometry problems that are on paper.
To find the exact dimensions of a regular shape in real life applications, the shape can simply be remeasured. It is important that the exact area of the shape be discovered before the shapes are added together. Remember to use the Pythagorean Theorem (a^{2} + b^{2} = c^{2}) to calculate the area of a triangle and simply use the length times width formula to calculate the area of a rectangle or square.
Learn MoreA flat 10-sided shape with sides of equal length is called a decagon. A solid 10-sided shape with faces of equal size and shape is called a decahedron.
Full Answer >Octahedra have eight faces. The answer to this question actually lies in the shape's name because the prefix "octa-" means "eight."
Full Answer >Shapes can have an infinite number of sides, but one example with a large number of sides is the googolgon, which has 10^{100} sides. Other examples of shapes with a large number of sides include the chiliagon (1,000), myriagon (10,000) and megagon (1,000,000).
Full Answer >A trapezoid is a quadrilateral with two parallel sides and, usually, two nonparallel sides. A quadrilateral is a geometric shape that has four sides. Some specialized types of trapezoid are the parallelogram and the isosceles trapezoid.
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