Question 3 of 18 125 1290 1440 The owners of a house with a backyard in the shape of an irregular hexagon (6 sides) are putting up a fence around their yard, except for one side of their yard which is tree-lined. Using a city survey, the owners have laid down guidelines and have determined the angles at each of the corners, except where the fence meets the trees. Use the diagram and measurements to determine the unknown angle