Question

If 2 angles in a triangle are 71 degrees and 56 degree, what is the measure of the third angle?

Answer 1

53

Explanation:

Sol'n

Let the remaining angle of a triangle be x.

x+71+56=180 (Sum of angles of a triangle is 180°)

or, x+127=180

or, x=180-127

.:, x=53°

.:, The measure of third angle is 53°