The invention provides a bracket and method of its use for adapting standard wall angle trim for use in sloped ceiling construction. The disclosed bracket arrangement can be used for the top edge or bottom edge of a sloped ceiling and be adjusted to match the angle of any practical ceiling slope. In disclosed embodiments, the bracket has the form of a rectangular flat steel sheet. The sheet has a hinge or bend line running lengthwise in its mid-area. The bend line is made by cutting the sheet intermittently along its length and thereby dividing the sheet into two sections. The cuts may be made, for example, by punching elongated slots along the bend line in a blank being formed into the bracket. Also punched into the bracket blank are a plurality of holes distributed lengthwise on marginal areas of the two sections of the blank.