1.

Two angles of a trangle are 30 degree and 80 degree. Find the third angle.

Answer»

Given


Angle 1 = 30° ; Angle 2 = 80°


To FIND : Third angle = ?


We KNOW that,


Angle sum property of a triangle states that, if we sum up all the interior angles of a triangle, we get 180° as the sum.


=> 30° + 80° + Angle 3 = 180°


=> 110° + Angle 3 = 180°


=> Angle 3 = 180° - 110°


=> Angle 3 = 70°


Hence the MEASURE of third angle is 70°.



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