SOLUTION: The third angle of a triangle measures twice the sum of the first and second angles. The first angle measures 23�. Find the measure of the second and third angles.

Question 468093: The third angle of a triangle measures twice the sum of the first and
second angles. The first angle measures 23�. Find the measure of the
second and third angles.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

Let 23, x and 2(x+23)represent the 1st, 2nd and 3rd angle respectively

Question states***

23� + x + 2(x+23�)= 180�

Solving for x

    3x = 111�

     x = 37�, the 2nd angle.  Third is 120�.  (2*60�)

CHECKING our Answer***

   23� + 37� + 120� = 180� 

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