Question

Sa se determine ecuatiile triubghiului cu varfurile A(-2,1) B(2,0) C(1,1) ! Help plizz

Answer 1

(AB): y-yA/yB-yA=x-xA/xB-xA
y-1/-1=x+2/4 => -x-2=4y-4 <=> -x-4y+2=0|*(-1)= (AB):x+4y-2=0
(AC): y-yA/yC-yA=x-xA/xC-xA=y-1/1-1=x+2/3 =>3y-3=0 |:3 
(AC):y=1
(BC): y-yB/yC-yB=x-xB/xC-xB= y-0/1-0=x-2/1-2 
=y/1=x-2/-1 <=> x+y-2=0
(BC): x+y-2=0