What is the value of x? Enter your answer in the box. x = ° Triangle A B C. The measure of angle A is fifty five degrees, the measure of angle B is eighty degrees and the measure of angle C is x.

45

Step-by-step explanation:

because 180-55-80 = 45

Triangles have, naturally, 3 angles. The sum of all 3 angles will always be 180 degrees, no matter the triangle. Angles A + B + C will always equal 180 degrees.

55 + 80 + x = 180

x = 180 - 80 - 55

x = 45°