Ocean waves move in parallel lines toward the shore. the figure shows the path that a windsurfer takes across several waves. for this exercise, think of the windsurfer's wake as a line. if m∠1 = (7x + 7y)° and m∠2 = (7x + y)°, find x and y.

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

set the two equations for y equal to each other. solve for x. this will be the x-coordinate for the point of intersection. use this x-coordinate and plug it into either of the original equations for the lines and solve for y.