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# Area Of Triangle - Box Method

A packed or closed shape which contains three lines linked end to end is known as triangle. It is a kind of Polygon. There are different properties which are given below:
Three corner points are present in a triangle and the corner Point is known as vertex of a triangle.
Now we will see how to find the Area of Triangle Box Method?
In box method triangle is drawn in a box and that box contains small number if rectangles with the help of which we can find the area of triangle.
Now we will see some steps for finding the area of triangle by using box method:
Step 1:
First we have a box and the triangle is present inside the box.
Step 2: Then we find the area of the box.
Step 3: Then we add all sides of a triangle and then subtract from the area of the box.
Step 4: On subtracting the values from the area of box we get area of triangle.
When we subtract the area of a simple shape which is present inside the box then we get the area of triangle.
Suppose we have the area of the box which is 1500, and the length of each sides inside the triangle is 100, 225 and 725 inch; then find the area of triangle by using the box method;
We know that when we subtract sides of triangle from the area of a box then we get triangle area;
So the area of box is 1500;
And each side of a triangle is 100, 225 and 725;
So the area of triangle is:
=> 1500 – 100 – 225 – 725;
=> 1500 – 1050;
=> 450 inch2

So the area of triangle by using box method is 450 inch2.

## When One Vertex is Inside the Box

In Geometry we study different types of cases and one of them is “when one Vertex is inside the box”. Let us take a rectangular box, in rectangular box a triangle is present in which one vertex of a triangle is inside a box and if we want to find the area then we simply subtract the area of Rectangle from the three Triangles which are present inside the...Read More

Math Topics