A triangle is a 3 sided polygon.
Types of triangles based on sides
1.Equilateral Triangle-Three equal sides
2.Isosceles Triangle-Two equal sides
3.Scalene Triangle-No equal sides
Types of triangles based on angles
1.Acute Triangle-All angles are less than 90°
2.Right Triangle-Has a right angle (90°)
3.Obtuse Triangle-Has an angle more than 90°