Calculate the area of the triangle ABC with vertices A (2, 3), B (1, −1) and C (−2, 4).

A (2, 3), B (1, -1), C (-2, 4)
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The area of the triangle ABC is calculated as follows:

Area = (1/2)*|(2*4) - (-2*3) + (3*-2) - (1*4)| = 8.
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