Define triangles and its types on …

a “triangle” is a three-sided polygon having three angles. The sum of all interior angles of a triangle will always add up to 180 degrees. This is called the angle sum property of triangle. Also, a triangle has many properties. Let us discuss in detail about the triangle types.

Types of Triangles Based on Sides

According to the lengths of their sides, triangles can be classified into three types which are:

1. Scalene
2. Isosceles
3. Equilatera

Types of Triangles Based on Angles

Triangles can be classified into three types with respect to their interior angles which are:

1. Acute-angled
2. Obtuse-angled
3. Right-angled

classification of triangles on the basis of their sides and angles

Equilateral triangle: An equilateral triangle is a triangle whose all three sides are equal.
Isosceles triangle: An isosceles triangle is a triangle whose any two sides are equal.
Scalene triangle: In a scalene triangle, all the three sides are unequal.
Classification of Triangles on the Basis of Their Angles

Acute-angled triangle: If all the three angles of a triangle are acute angles (i.e., each measures less than 90°), it is called an acute-angled triangle.
Right-angled triangle: If one of the angles of a triangle is a right angle (i.e., measures 90°), it is called a right-angled triangle.
Obtuse-angled triangle: If all the three angles of a triangle is an obtuse angles (i.e., measures more than 90°), it is called an obtuse-angled triangle.