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srikanth prabhu

· started a discussion

· 1 Months ago

not clear (Question: 382390.0 )

xpln again

Question:

Each of the five angles of a polygon is 172º and each of the remaining angles of the polygon is 160º. The number of sides of the polygon is –

Options:
A)

22

B)

23

C)

20

D)

21

Solution:

Ans: (d)

  

anni

· commented

· 1 Months ago

here sum of exterior angles is always 360. each int.+ext. angle=180 so, 180-172=8 and total ho gaya 8*5=40. remaining 360-40=320. 180-160=20. 20*x =320;x=16.total no. of sides will be 16+5=21.
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