Question

Find the areas of the triangles whose vertices are given in Exercises 41–47.

41. A(0, 0), B(-2, 3), C(3, 1)

42. A(-1, -1), B(3, 3), C(2, 1)

43. A(-5, 3), B(1, -2), C(6, -2)

44. A(-6, 0), B(10, -5), C(-2, 4)

45. A(1, 0, 0), B(0, 2, 0), C(0, 0, -1)

46. A(0, 0, 0), B(-1, 1, -1), C(3, 0, 3)

47. A(1, -1, 1), B(0, 1, 1), C(1, 0, -1)

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