CBSE Class 9 Math, Herons Formula
Class IX Math
Notes for Heron’s Formula
Notes for Heron’s Formula
Basic Concepts And Important Points
1. For a triangle with length of sides a, b and c, perimeter = a + b + c
2. Area of a triangle 
3. Area of an isosceles triangle with length of two equal sides a and base 
4. Area of an equilateral triangle 
5. Altitude of an equilateral triangle 
6. Heron’s formula: If a, b, c denote the lengths of the sides of a triangle, then area of triangle.
