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A polygon that has four sides is called?
A. Triangle
B. Quadrilateral
C. Pentagon
D. Hexagon
Correct Answer Is Option = Quadrilateral
Notes / Explanation
A polygon that has four sides is called a quadrilateral, and this is part of the system by which shapes with straight sides are named according to how many sides they have, a topic within the branch of mathematics that deals with shapes, known as geometry. A polygon is a flat, closed shape made up of straight sides, and each polygon is named according to the number of its sides, so that a shape with three sides is a triangle, a shape with four sides is a quadrilateral, a shape with five sides is a pentagon, a shape with six sides is a hexagon, and so on. The word quadrilateral comes from words meaning four sides, and so a four-sided shape is called a quadrilateral. A quadrilateral has four sides, four corners and four angles, and the four angles of any quadrilateral always add up to three hundred and sixty degrees. There are many different kinds of quadrilaterals, which are among the most common and important shapes in geometry and in everyday life. Among the special kinds of quadrilaterals are the square, which has four equal sides and four right angles; the rectangle, which has four right angles and opposite sides equal; the rhombus, which has four equal sides; the parallelogram, which has opposite sides parallel and equal; the trapezium, which has one pair of parallel sides; and others. These special quadrilaterals have their own particular properties and are very widely used and encountered, in shapes such as those of books, doors, windows, tables, fields, rooms and countless other objects, so that the quadrilateral is one of the most important and familiar shapes. The naming of polygons according to the number of their sides, and the study of the different kinds of quadrilaterals and their properties, are basic and important parts of geometry. Being familiar with the names of the common polygons and the kinds of quadrilaterals is helpful both in the study of mathematics and as a piece of general knowledge. For PPSC and other competitive examinations, the key points to remember are that a polygon with four sides is called a quadrilateral, that it has four sides, corners and angles, with the four angles adding up to three hundred and sixty degrees, that there are many special kinds of quadrilaterals, including the square, the rectangle, the rhombus, the parallelogram and the trapezium, and that the quadrilateral is one of the most common and important shapes in geometry and in everyday life.
