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OpenStudy (anonymous):
Calculate the area of triangle ABC with altitude CD, given A (-7, -1), B (-1, 5), C (0, 0), and D (-3, 3). A. 18.5 square units B. 9 square units C. 21 square units D. 18 square units
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OpenStudy (amistre64):
the determinant of 2 of the corners define the area of its representative rectangle ... so 1/2 of it is the area of the triangle
OpenStudy (amistre64):
otherwise, find the length of CD and AB
OpenStudy (anonymous):
I still don't know lol
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