Question

Find area of triangle by vector method

Answer 1

Answer:

The legs of the three triangles can be found by simple subtraction of coordinates and then used to find the area since the area of a triangle is one-half the base times the height. Area of triangle A = 3 ( 3 ) / 2 = 9/2. Area of triangle B = 5 ( 6 ) / 2 = 15. Area of triangle C = 8 ( 3 ) / 2 = 12.