DEFINITION Triangle is a closed figure bounded by three straight lines called sides. It can also be defined as polygon of three sides. Area of triangle The area of the triangle is given by the following formulas: Given the base and the altitude See also the links below: CENTRES OF THE TRIANGLEDERIVATION OF HERON'S FORMULA
Derivation of Heron’s Formula for Area of Triangle
For a triangle of given three sides, say a, b, and c, the formula for the area is given by Derivation of Heron's Formula
Derivation of Formula for Radius of Incircle
The radius of in-circle is given by the formula DERIVATION
Derivation of Formula for Radius of Circumcircle
The formula for the radius of the circle circumscribed about a triangle (circumcircle) is given by
Derivation of Formula for Area of Cyclic Quadrilateral
For a cyclic quadrilateral with given sides a, b, c, and d, the formula for the area is given by DERIVATION OF THE FORMULA
M CUBE: MatheMatics by Maheshwari 