Question

What is the formula to find the area of triangle whose coordinates are given?

Answer 1

If the coordinates are (x1,y1), (x2,y2) and (x3,y3), then the formula to find the area of triangle is :
1/2 | [ x1(y2-y3) + x2(y3-y1) + x3(y1-y2) ] |
| .... | Stands for mod of.


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