The composition do,0. 75(x, y) ∘ do,2(x, y) is applied to △lmn to create △l''m''n''. Which statements must be true regarding the two triangles? check all that apply. ∠m ≅ ∠m'' △lmn ~ △l''m''n'' △lmn ≅ △l''m''n'' the coordinates of vertex l'' are (-3, 1. 5). The coordinates of vertex n'' are (3, -1. 5). The coordinates of vertex m'' are (1. 5, -1. 5).