Use the measurements provided in the diagram to determine the measure of angle B.

The answer is B = 119

First you have to find out how much the other angles inside the triangle are. For C you have to do 180 (because that is how much a flat like is) minus 118. This gives you 62. Then you have to add the 62 with the 57. This gives you 119. And since a triangle has to have all of its degrees equaling to 180 you have to subtract 119 from 180 giving you 61. Since A is equal to 61 and a flat line is 180 degrees you do 180 minus 61. This gives you the measure of angle B.