The area bounded by three sides is called a triangle.
Equilateral triangle is a geometric shape where all three sides are equal in length and all the internal angles are equal as well.
A triangle where two sides are equal to each other is called an Isosceles Triangle.
A triangle where none of the sides are equal is called an Scalene Triangle.
A triangle that has an angle measure of 90 degrees is called a Right Angle.
A triangle where all three angles measure less than 90 degrees is called an Acute Triangle.
A triangle where an angle measures greater than 90 degrees is called an Obtuse Triangle.