Question
In Exercises 21-32, use a determinant and the given vertices of a triangle to find the area of the triangle.
Step 1
The determinant is set up as follows: \[ \begin{vmatrix} x_1 & y_1 & 1 \\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1 \\ \end{vmatrix} \] Show more…
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