Correct Answer: Option A

Explanation

sum of exterior angles = 360^o

Sum of interior angle = (n - 2) x 180

360 = \(\frac{1}{2}\) x(n - 2) x 180(90^o)

360 = \(\frac{1}{2}\) x(n - 2) x 90^o

\(\frac{360}{90}\) = a - 2

4 = n - 2

n = 4 + 2 = 6

• If the power of a lens is +2.5D. Calculate the radius of curvature (a). 80cm (b). 40cm (c). 25cm (d).... Answer this

  1 Answers   ·   Physics   ·   4 days ago
• Subjects to learn under petroleum engineering? Answer this

  1 Answers   ·   4 days ago
• what is the cut of mark for medical doctor in university and list all the university? Answer this

  1 Answers   ·   2 days ago