Analytic Geometry Solutions
Topics || Problems
Find the area of the triangle with the vertices given, (2,3), (1, 1)(-2,-2)
\(A = \frac{1}{2}\begin{vmatrix}{2}&{3}&{1}\\{1}&{1}&{1}\\{-2}&{-2}&{1}\end{vmatrix}\)
\(A = \frac{1}{2} |-3|\)
\(A = \frac{3}{2} \) Square Units