Classification of Triangles

  • We know that a triangle is a polygon with the least number of sides. There are different types of triangle.

Triangle can be classified on the basis of their angles as follows:

  • If each angle of a triangle is acute, it is called an acute-angled triangle.
  • Any angle of a triangle is a right angle, it is called a right-angled triangle.
  • Any angle of triangle is obtuse angle, it is called an obtuse-angled triangle.

The triangles can be also be classified on the basis of the lengths of their sides as follows:

  • All the three sides of a triangle are of unequal length, it is called a scalene triangle.
  • Any two of the sides of a triangle are equal, it is called an isosceles triangle.
  • All the three sides of a triangle are of equal length, it is called an equilateral triangle.
Scroll to Top