The sum of the angle measures of any triangle is 180 degrees. Suppose that one angle in a triangle has a degree measure of −4x3 and another has a degree measure of +5x4 . Write an expression for the degree measure of the third angle in the triangle.

Respuesta :

the question doesn't match with what I've been taught since any angle measuring to 180 degrees is a straight angle which looks like a line with a vertex.