The sum of the exterior angles of a convex polygon, one angle at each vertex, is equal to how many degrees?
a. 90°
b. 180°
c. 360°
d. 540°

The sum of exterior angles for any given convex polygon would be 360 degrees, with n sides

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.