(a) Two of the three triangles specified in Exercise 13
Chapter 1, Problem 14(choose chapter or problem)
(a) Two of the three triangles specified in Exercise 13 are right triangles. Find their areas. (b) Calculate the area of the remaining triangle in Exercise 13 by using the following formula for the area A of a triangle with vertices (x1, y1), (x2, y2), and (x3, y3): The derivation of this formula is given in Exercise 34. (c) Use the formula given in part (b) to check your answers in part (a).
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