Кафедра: Математика

Pentagons have five sides. Hexagons

жүктеу 0,64 Mb. бет 4/6 Дата 03.02.2022 өлшемі 0,64 Mb. #35479

Pentagons have five sides. Hexagons have six sides. Heptagons or septagons have seven sides. Octagons have eight sides. Nonagons have nine sides. Decagons have ten sides. Hendecagons (also known as undecagons) have eleven sides. Dodecagons have twelve sides. Calculating the perimeter and area of these shapes can be more difficult. Sometimes you have to come up with ways of doing it yourself. When you come across an equilateral polygon, you can of course multiply one of the sides by the number of sides of the shape. In other cases, you may need to find some dimensions yourself. When calculating the area of these shapes, there are two main ways of doing so: dissecting and filling. With dissecting, you cut up the figure into many pieces, such as parallelograms, squares and triangles. Then you can simply add up all those areas to find out the total. With filling, you add extra bits to shapes so as to make it look like the shapes you usually come across with. For example, when you don't known the altitude of a triangle, you can put three surrounding triangles around it. Then you can calculate the area of the rectangle formed and the surrounding triangles, thereby finding the area of the triangle. жүктеу 0,64 Mb. Достарыңызбен бөлісу:

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