You need to cut up your figure into several parts in shapes for which we know how to calculate areas, such as squares, rectangles, and triangles. The area of your figure is the sum of the areas of its parts.
Add all sides together to get the perimeter.
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It is the total surface area of the shape.
Add the areas of all the faces (Flat sides).
A square has all 4 sides equal in length. A four sided closed figure with all sides different length is called a quadrilateral.
Surface area is all the areas for a 3 figure. Area is for only on side of a 3d figure
It is called an 'Irregular Hexagon'
An octagon is any figure that has 8 sides, no one said that all of the sides had to be the same length.
Area you multiply 2 sides and perimeter you add all the sides together.
You are a scalene triangle. If you were to have two of the same sides similar, you would be an isoceles triangle. If you were to have all of your sides the same, you would be an equilateral triangle.
Any figure with 6 sides is a Hexagon. If all sides of the figure are of the same length, and all interior angles are 120° then you have a regular hexagon.
An octagon can be either regular or irregular. A regular octagon in a 2-dimensional closed figure with eight sides, all of which are the same length. This means that all the angles are the same, too. An irregular octagon is a 2-dimensional closed figure with eight sides, but at least two of the sides are of different length. All sides can be of different lengths.