Draw diagram various Triangles and write …

Scalene Triangle : A triangle whose all sides of different lengths is called Scalene Triangle.
Isosceles Triangle : A triangle whose any two sides are equal is called an Isosceles Triangle.
Equilateral Triangle : A triangle whose all sides are equal to one another, is called an Equilateral Triangle.
Acute Triangle : A triangle whose all the angles are acute ( < 90 0 ) is called an Acute-Angled Triangle or Acute Triangle.
Right Triangle : A triangle whose one angle is a right angle ( = 90 0 ), is called a Right-angled Triangle or Right Triangle.
A triangle can not have more than 1 right angle.
Obtuse Triangle : A triangle whose one angle is obtuse (≥90 0 ) is called an Obtuse-Angled triangle or Obtuse Triangle.
A triangle can not have more than one obtuse angle .
1) If the measure of two angles is same then it is Isosceles Triangle.
2) If the measures of all the three angles are same then it is an Equilateral Triangle.