What is base of triangle?

The base of a triangle is one of its sides, usually referred to as the bottom side. It is one of the two sides that form the triangle's endpoints along with the height or altitude.

The base of a triangle plays a crucial role in determining the area of the triangle. The area of a triangle is calculated by multiplying the length of the base by the height of the triangle and then dividing it by two.

In an isosceles triangle, which has two equal sides, the base is the side that is different in length from the other two sides.

In a scalene triangle, which has all sides of different lengths, any of the three sides can be considered as the base, based on the context or requirement of the problem.

The base of a triangle can also be used to calculate various other properties of the triangle, such as the perimeter or the lengths of other sides, using trigonometric functions like sine, cosine, or tangent.