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*********POLYGON*********
Polygon:Any closed figure which three or more straight lines is called Polygon. |
Rhombus:Rhombus is a polygon which has all sides equal and opposite sides parallel to each other. Pparallogram :paralleogram is a polygon which has opposite equal and opposite sides parallel to each other . Trapezium: Trapezium is a polygon which has opposite sides parallel to each other Kite: Kite is a polygon which has adjacent sides equal and opposite sides parallel to each other |
********CHECK OUT SOLVED EXAMPLES********
1)Find the sum of interior angle of regular hexagon. Ans: n=6,sum of of interior angles= (2n-4)*90
=(12-4)*90 =8*90=720 degree
check the answer!!! |
2)Find exterior angle of regular heptagon
Ans: here n= 7,n=(360/n)
=360/7=51.45degree check the answer!!! |
3) Find the sides of polygon which exterior angle is 30 degree
Ans: exterior angle= 360/n,n=360/exterior angle=360/30 = 12
n=12 check the answer!!! |
4.Check whether Polygon is possible or not when the sum of interior angles is 3000degree Ans:(2n-4)*90=3000
check the answer!!!
| 5)What would be the side of polygon whose interior angle is 30 degree Let the side be n
(2n-4)*90=n*30 2n-4=(n*30)/90 2n-4=n/3,2n-n/3=4,5n/3=4,n=(4*3)/5=12/5 n should be natural number so polygon is not possible check the answer!!! |
6.Difference betFind p+q,p-q ,p=((2)1/2+2) /((2)1/2-2)),q = ((2)1/2-2) /((2)1/2+2)) Ans:
check the answer!!! |
********TRY BY YOURSELF********