SOLUTION: The vertices of triangle DEF are D (-5,3), E (4,3), and F (4,-8). What is the area, in square units, of triangle DEF?

Algebra ->  Triangles -> SOLUTION: The vertices of triangle DEF are D (-5,3), E (4,3), and F (4,-8). What is the area, in square units, of triangle DEF?       Log On


   

Question 884997: The vertices of triangle DEF are D (-5,3), E (4,3), and F (4,-8).
What is the area, in square units, of triangle DEF?

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

It's a right triangle so you can use the two legs to get the area.
A=%281%2F2%29bh=%281%2F2%29%284-%28-5%29%29%283-%28-8%29%29
A=%281%2F2%29%289%29%2811%29
A=99%2F2