Students, we have learned how to find the area of a triangle if we have three, what is given right
now using that same criteria we can find if three points are linear, linear means, the points lie
on the same line.
For example, over here, these three points lie on the same line and hence the ERCOLINI.
Now, if they were not kaleena, right.
If they were not convenient.
So for example, it's like this, then you can form a triangle.
Right.
And if you can form a triangle, it will have some area.
But in this case you cannot form a triangle.
Therefore, if you are given these three vertices and if you do this operation, which we discussed
before and you get the area zero, that means the three given points are linear.
Now, what does this mean?
Remember, you need to multiply it in a cross fashion, right?
You need to multiply x1 with y2, x2 with Y three and X three with Y one.
Now also you need to multiply Y two with x2 with wyvern extremist Y to an X one with Y three.
So that gives X one Y two plus x2 Y three plus X three.
Wyvern is equal to x2 wyvern plus X three by two plus x1 y three.
So if this is true it means that the given three points are linear.
Now it's much easier to remember it like this rather than remembering the formula like this over here.