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In the coordinate plane, A = (-4,4), B = (0,7), and C = (2,-2).  What is the area of triangle ABC?

Nov 29, 2020

#1
+10843
+1

In the coordinate plane, A = (-4,4), B = (0,7), and C = (2,-2).  What is the area of triangle ABC?

Hello Guest!

$$\color{blue}◬ABC=◬BOA+◬BOC\\ =\frac{7\cdot 4}{2}+\frac{7\cdot2}{2}$$

$$=21$$

The area of triangle ABC is 21.

!

Nov 29, 2020