The vertices of Δ ABC are point A (7,9), B(3,-7), C(3,-3). Which of the following is true?
a) ABC is a right-angled triangle
b) ABC is an equilateral triangle
c) ABC is an isosceles triangle
d) Both (a) & (c)
e) None of these

• AB=((7-3)^2+(9+7)^2)^1/2=262^1/2
  AC=((7-3)^2+(9+3)^2)^1/2=160^1/2
  BC=((3-3)^2+(-7+3)^2)^1/2=4
  so ans=(e)
• 10 years agoHelpfull: Yes(3) No(6)
• IT can be easily solved graphically,
  so, by putting an approx. values we conclude that
  AC = (160)^1/2
  BC = 4
  AB = (272)^1/2
  
  AB!=BC!=AC
  also it does not satisy pythagoras theorem.
  So, ans = (e).
• 10 years agoHelpfull: Yes(2) No(2)
• AB= (272)^.5 ; BC= 4 ; AC = (160)^.5 ; so correct option is (c)
• 10 years agoHelpfull: Yes(2) No(1)
• ans (a) is correct
• 10 years agoHelpfull: Yes(0) No(0)