Which of the following triangles with measures of sides given below is an obtuse angled triangle?
a)12, 5, 13
b)6, 7, 5
c)7, 3, 5
d)8, 8, 8

• For a obtuse triangle, its side must satisfy one of the following condition:
  a^2 + b^2 < c^2
  b^2 + c^2 < a^2
  c^2 + a^2 < b^2
  
  so option c is the answer.
• 8 years agoHelpfull: Yes(3) No(1)
• 7,3,5 the hypotenuse got through sumof squares of shorter side 3,5 is shorter than longer side 7
• 9 years agoHelpfull: Yes(2) No(0)
• The square of sum of the shortest sides of option b combination is 61.And root over 61 = 7.81024,which is more than 7.So,the triangle is an obtuse angled triangle.
  Option a clearly speaks of a right angled triangle,apply the same logic for option c as b and it does not work,option d speaks of an equilateral triangle.So,option B is correct.
• 9 years agoHelpfull: Yes(2) No(4)
• if a=12; b=5 and c /hypotenuse/ = 13
  solution is
  a) 12,5,13 becаuse C / hypotenuse / is the longest
• 9 years agoHelpfull: Yes(0) No(1)
• 3^2+5^2
• 8 years agoHelpfull: Yes(0) No(0)
• ans will be "c" ( bcz 3^2+5^2
• 7 years agoHelpfull: Yes(0) No(0)