Area of triangle using determinants (Area = (1/2)|x₁(y₂−y₃) + x₂(y₃−y₁) + x₃(y₁−y₂)|)
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Area = (1/2)|x₁(y₂−y₃) + x₂(y₃−y₁) + x₃(y₁−y₂)|
What each symbol means
| Symbol | What it stands for |
|---|---|
| (x₁,y₁),(x₂,y₂),(x₃,y₃) | Vertices of the triangle |
When to use this
Points must be non-collinear for non-zero area. If area = 0, points are collinear.