Table of Contents
Formula for the area of a triangle using the base and the height
How to find the area of a triangle using its sides. Heron’s formula
The area of a triangle from two sides and the included angle
How to find the area of a triangle from 3 angles and a side or from 2 angles and a side
The area of a triangle using two sides and the sine of the exterior angle
Formula of the area of a triangle using three heights
Formula of the area of a triangle from three medians
How to find the area of a triangle in terms of the inscribed circle’s radius
How to find the area of a triangle in terms of the circumscribed circle’s radius
Theorems on similarity of the areas of the triangles
Triangles which have equal areas