The area of a triangle can be calculated using the formula: Area = 1/2 × base × height. The base is any side of the triangle, while the height is the perpendicular distance from that base to the opposite vertex. This formula applies to all types of triangles, including equilateral, isosceles, and scalene triangles. To find the area, first measure the length of the base and the height. Then, multiply these two values together and divide by two. Understanding how to calculate the area of a triangle is essential in various fields, including geometry, architecture, and engineering.