Question

How to find the equation of triangle with vertices?

Answer 1

By applying this formulae

y=mx+c.

i think so i am not sure

Answer 2

Answer:

$\bold\red{Area\:of\: triangle=\frac{|x1(y2-y3)-x2(y1-y3)+x3(y1-y2)|}{2}}$

Step-by-step explanation:

Let the vertices of a triangle be A(x1,y1) B(x2,y2) and C(x3,y3).

Now, to find the area of the triangle, we have to find the modulus of determinants of these points and divide it by 2.

It should be made (3×3) matrix . For this, we put 1 in 3rd row or column.

The area of the triangle is equal to,

$\bold{\frac{|x1(y2-y3)-x2(y1-y3)+x3(y1-y2)|}{2}}$

Note:- Refer to the attachment