Answer :
Now for a pentagon, we know it has five sides. So let us substitute n = 5 in the formula.
Sum of interior angles is given as = (2 × 5 – 4) × 90
= (10 – 4) × 90
= 6 × 90
= 540°
Let the fifth angle be x.
Now let us add all the angles.
65 + 89 + 132 + 116 + x = 540
402 + x = 540
x = 540 – 402
x = 138°.
Rate this question :
How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
view all courses
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation


RELATED QUESTIONS :
Let’s write then
West Bengal - MathematicsLet’s write then
West Bengal - MathematicsLet’s write then
West Bengal - MathematicsLet’s write wheth
West Bengal - Mathematicslet’s find whethe
West Bengal - MathematicsLet’s find whethe
West Bengal - MathematicsLet's observe the
West Bengal - MathematicsLet’s write the s
West Bengal - MathematicsLet's prove logic
West Bengal - MathematicsLet’s write then
West Bengal - Mathematics