Question 824252:  show  that the triangle whose vertices are A(3,6), B(-2,-4) and C(-5,2) is a right angled triangle. Find the area of the triangle. 
 Answer by Alan3354(69443)      (Show Source): 
You can  put this solution on YOUR website! show  that the triangle whose vertices are A(3,6), B(-2,-4) and C(-5,2) is a right angled triangle. Find the area of the triangle. 
------------ 
Find the slopes, see if 2 are perpendicular.  If so, it's a right triangle. 
--- 
Area = b*h/2 
 
  | 
 
  
 
 |   
 
 |