A) An acute angled triangle.
B) An obtuse angled triangle.
C) A right angled triangle.
D) A right angled isosceles triangle.
Correct Answer: B
Solution :
Let the measures of the angles be \[1x,\,2x\] and \[7x\]. We have, \[1x+2x+7x={{180}^{o}}\]\[\Rightarrow \] \[x={{18}^{o}}\] The angles are \[{{18}^{o}},\,{{36}^{o}}\] and \[{{126}^{o}}\]. \[\therefore \] The triangle is obtuse angled.You need to login to perform this action.
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