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Name _____________________________
Date ___________________

Matrices
(Answer ID # 0309533)
Use determinants to calculate the area. Show your work.

1.   Calculate the area of the triangle with the following points:
(-4, 1), (-1, -4), (-1, 3)





2.   Calculate the area of the triangle with the following points:
(-3, -4), (-6, -7), (-1, -8)





3.   Calculate the area of the triangle with the following points:
(7, 1), (2, 2), (-1, -3)





4.   Calculate the area of the triangle with the following points:
(0, -1), (-3, 0), (-4, -2)





5.   Calculate the area of the triangle with the following points:
(-8, -10), (-3, -11), (-5, -5)





6.   Calculate the area of the triangle with the following points:
(1, -8), (1, -4), (-1, -7)





7.   Calculate the area of the triangle with the following points:
(0, -3), (6, 0), (1, 0)





8.   Calculate the area of the triangle with the following points:
(-4, 3), (-9, -2), (-6, 0)





9.   Calculate the area of the triangle with the following points:
(-4, -5), (-5, -9), (0, 2)





10.   Calculate the area of the triangle with the following points:
(0, -2), (5, 8), (-3, 0)





11.   Calculate the area of the triangle with the following points:
(2, -5), (-1, -9), (2, -9)





12.   Calculate the area of the triangle with the following points:
(5, 0), (2, -5), (9, 4)






 


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