SOLUTION: Prove that sum of the three angles of a triangle is 1800 .Using the result, find the value of x and all the three angles of a triangle, if the angles are (2x � 7)0 , (x +25)0 an

Question 1105524: Prove that sum of the three angles of a triangle is 1800
.Using the result, find the value of x and all the
three angles of a triangle, if the angles are (2x � 7)0
, (x +25)0 and (3x +12)0

Answer by ikleyn(52851) (Show Source): You can put this solution on YOUR website!
.

Regarding the proof, see the lesson
    - Sum of the interior angles of a triangle
in this site.


Then

(2x-7) + (x+25) + (3x+12) = 180

6x + 30 = 180

6x = 180-30 = 150  ====>  x =  = 25 degrees.


Having this, find the angles on your own.

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