Answers

2015-02-17T19:45:18+05:30
Second angle=x
first angle=2x
sum=2x+x=3x
third angle=3x+18
total angle=180
3x+18+2x+x=180
6x+18=180
6x=162
x=162/6=27
angles= 27,54,99
1 5 1
sarisa pls pick my answer as the best..pls.
2015-02-17T22:36:20+05:30
Let the second angle be 'a'
then the first angle will e 2a
the third angle = a+2a+18
                     = 3a+18
The sum of all the angles of a triangle is 180
so , a+2a+(3a+18)=180
6a+18=180
6a=180-18
   =162
a=162/6
Therefore a=27

then the first angle = 27 degree
       second angle = 2*27 = 54 degree
           third angle = 27+54+18 = 99 degree


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