![]() ![]() This fixed distance is called a radius (R). ![]() It can be divided into two broad sections and then into further divisions:Ī circle is a simple two-dimensional closed curve 2D drawn in such a way that each point on the circle is at equidistant from the centre. The 2D shapes names given below are two-dimensional figures having edges, vertices and angles. Thus, the pair of numbers defining a point is called coordinates of a point.Īs discussed, two-dimensional shapes can be represented on a coordinate system and each point on the shape correlates with x and y-axis. The position of any point on a plane can be defined by a pair of two numbers, where one number coordinates with the x-axis and the other number coordinate with the y-axis. In the cartesian coordinate system for the plane, there are two perpendicular number lines (x-axis and y-axis) such that the middle of both the number lines intersects with each other to have a common zero. The difference between both sides is the sign as one side contains positive numbers and the other side contains negative numbers. A number line has zero marked in the middle and numbers starting from one on either side of zero that goes to infinity. Coordinate systems are defined by the number of lines. Two Dimensional Shapes in A Coordinate System.Īll two-dimensional shapes can be represented in the Coordinate system. Pierre de Fermat also worked on the same but in 1649, Frans van Schooten brought in the concept of using a pair of axes. In 1637, Descarte wrote about the idea of the system having two perpendicular axes. Later, the cartesian coordinate system was made to specify pairs of numerical points on a plane. ![]() Mathematicians and scientists like Euclid and Pythagoras started developing theorems on areas, angles and perimeters of two-dimensional shapes. Three-dimensional objects are the objects having points whose position can be specified by using three coordinates. Flat objects that can be represented on a plane are two-dimensional objects as it requires two coordinates to specify the position of the points in the object. A line can be defined in one-dimension because the position of all the points on a line can be described by only one coordinate. Dimension is a spatial space where the position of every point of an object can be specified with the help of a minimum number of coordinates. 2D stands for 2 dimensional and 3D stands for 3 dimensional. Examples of 2d shapes are plates, cards, sheets, clocks, windows, etc found in our day to day life.Īll the shapes found on Earth are basically of two types - 2D and 3D. Even circles do not have a thickness to be defined like all the other 2d figures. ![]() Shapes like circles do not have length and breadth but it can be defined by a radius which is actually the distance between its centre and boundary. These shapes have length and breadth but no considerable width or thickness. Two-dimensional shapes are the flat plane figures that can be represented on a piece of paper or flat surface. Objects like thin-crust pizza and credit cards are flat whereas objects like a box or a football are not. Have you ever tried to find out the difference between the shape of a credit card and a box? Or a thin crust pizza and a football? Well, the major difference between the aforementioned pair is the width. ![]()
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