PLEASE I NEED HELP PLEASEExpress the sum of the angles of this triangle in two different ways

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

Which segments are congruent? o jn and ln o jn and nm o in and nk onk and nm

Taking algebra two apex courses and need with these questions