A triangular pen is modeled by △ABC. The vertices of △ABC are A(0, 8), B(12, 3), and C(7, –9). What is the area of the pen?
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Step-by-step explanation:
Use the formula
Area of triangle = (1/2) [x1 (y2- y3 )+x2 (y3-y1 )+x3(y1-y2)]
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