Answers

2015-07-08T21:28:37+05:30
Let the step of increase per progressive number be x.
⇒The numbers are 18,18+x,18+2x and 18+3x respectively.
We know ,
Sum of angles in a quadrilateral=360 degree.
⇒By the condition:
18+18+x+18+2x+18+3x=360
6x=360-72
x= \frac{288}{6} =48
⇒The angles are :
1>18 degree
2>18+48=66 degree
3>18+48*2=114 degree
4>18+48*3=162 degree.
Ans:The angles are 18 degree  , 66 degree  , 114 degree and 162 degree.

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