 Unlike a dominant chord where the leading-tone can be frustrated and not resolve to the tonic if it is in an inner voice, the leading-tone in a leading-tone triad must resolve to the tonic.Commonly, the fifth of the triad resolves down since it is phenomenologically similar to the seventh in a dominant seventh chord.All in all, the tritone resolves "inward" if it is written as a diminished fifth (m. 1 below) and "outward" if it is written as an augmented fourth (m. 2).