The Area of a Triangle Using a Determinant
The Area of a Triangle Using a Determinant
The area of a triangle with vertices at the coordinates , , and is the absolute value of .
(a,b)
(c,d)
(e,f)
A=
1
2
a | b | 1 |
c | d | 1 |
e | f | 1 |
| |||||||||||||
|
a | b | 1 |
c | d | 1 |
e | f | 1 |