Scalene Triangle: A scalene triangle is the one with all unequal sides.Isosceles Triangle: A triangle with two sides of equal length is an isosceles triangle.Equilateral Triangle: A triangle with all sides equal is an equilateral triangle.On the basis of equality of sides, triangles are of three types: The sum of the interior angle of a triangle is 180°. TrianglesĪ polygon bounded by three line segments or sides is a triangle. Let us discuss the types of polygons on the basis of the number of sides. A Polygon in which all sides and all angles are not equal is an irregular polygon. The sum of all interior angles of a regular polygon = 180° × (n − 2), where n is the number of sides. A Polygon in which all sides and all angles are equal is a regular polygon. Polygons are classified into Regular and Irregular Polygons. Adjacent Vertices: The end-points of the same side of a polygon are adjacent vertices.Vertex: The point where the sides of a polygon meet is called the vertex of the polygon.Adjacent Sides: Two sides of a polygon having a common end-point are adjacent to each other.Sides: The lines segments that form the exterior of the polygon are the sides of the polygons.PolygonsĪ polygon is a simple closed figure with three or more than three line segments. Shapes can be classified into curves ( circles) and polygons. Every object around us has a definite shape. The shapes are made of lines or line segments arranged in an organized manner. Let us learn more about the closed figure. Browse more Topics under Shapes And Angles The figures that start and end at the same point are closed figures. Open figures are those which do not end where they start. Figures can be broadly classified as open or closed. A figure can be made of different types of shapes. What is shape? The literal meaning of shape is the external form of a thing or its appearance.
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