The three different types are acute triangle, obtuse triangle, and right triangle. All triangles have three interior angles whose angle measurements sum to 180° with different combinations of angles depending on the type of triangle. Triangles can also be classified on the basis of angles. no matter where a line is drawn through a scalene triangle, the left and right sides of the line will never be equal to each other.Ĭlassification of Triangles Based on Angles This shape does not have a line of symmetry i.e. Scalene TriangleĪ scalene triangle is a triangle with all three sides of different lengths along with three angles of different measures. The two equal sides of an isosceles triangle are called the legs and the angle between them is called the vertex angle or apex angle. This type of triangle has two sides of the same length. The word isosceles is derived from the Greek word 'iso' which means same and 'skelos' which means leg. An equilateral triangle is considered a regular polygon with angles and sides equal. Here, the three sides are equal to each other along with the three angles measuring 60°. Equilateral TriangleĮquilateral triangle is the most common type used while learning the basics of the shape. The three types of triangles are equilateral triangle, scalene triangle, and isosceles triangle. Hence, triangles are classified on the number of sides with the same length equal to each other or not equal at all. It is specifically based on the ratio of the lengths of the sides with one another rather than the unit measure. Classification of Triangles Based on SidesĪ triangle consists of three sides but the factor to classify them is the length of the sides.
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