2D Shapes Definition In maths, 2d shapes can be defined as the plane figures that can be drawn on a flat (or plane) surface or a piece of paper. All the 2d shapes have various parameters such as area and perimeter . Some of the 2d shapes contain sides and corners, whereas some have curved boundaries. 2D Shapes Names Circle Triangle Square Rectangle Pentagon Octagon The basic types of 2d shapes are a circle, triangle, square, rectangle, pentagon, quadrilateral, hexagon, octagon, etc. Apart from the circle, all the shapes are considered as polygons, which have sides. A polygon which has all the sides and angles as equal is called a regular polygon. Including the circle , an ellipse is also a non-polygon shape. Both circle and ellipse have a curved shape , whereas the polygons have a closed structure with sides. Now let us discuss some shapes one by one. Circle A circle is a closed 2d figure in which the set of all the points in the plane is...
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