Area of triangle (coordinate geometry) (Area = (1/2)|det of homogeneous coords|.)
jee-mainjee-advanced
Area = (1/2)|det of homogeneous coords|.
What each symbol means
| Symbol | What it stands for |
|---|---|
| (x_i,y_i) | Vertices |
When to use this
Non-collinear points; signed area without abs in oriented sense.