On the basis of the length of the sides we ensure that a triangle is isosceles or scalene or equilateral.

Scalene triangle is a triangle in which all sides are unequal.

Isosceles triangle is a triangle in in which two sides are equal and one side is unequal.

Equilateral triangle is a triangle in which all sides are equal.

There are some different types more Triangles also.

Right angle triangle is a triangle in which one angle of a triangle is right angled means 90 degree.

Obtuse angled triangle is a triangle in which one angle of a triangle is more than 90 degree or obtused angle.

Acute angle triangle is a triangle in which one angle of a triangle is less than 90 degree means it is acute angle..

The triangle in the given figure is isosceles triangle because the two sides of that triangle are equal 5 cm