Adjustable angle bracket

An adjustable angle bracket, comprising:

• a base having a rectangular shape;
• and
• a first lug having a top edge and a bottom edge, wherein the bottom edge of the first lug is coupled to the base, and wherein the first lug defines a first set of slots;
• and
• a second lug having a top edge and a bottom edge, wherein the bottom edge of the second lug is coupled to the base, and wherein the second lug defines a second set of slots,
• wherein each of the first lug and the second lug has a triangular shape,
• wherein the first set of slots define a plurality of angles relative to a direction D orthogonal to the base,
• wherein the second set of slots define the plurality of angles relative to the direction D, and
• wherein the first set of slots are distinct and spaced apart from one other along a direction orthogonal to the direction D, and wherein the second set of slots are distinct and spaced apart from one other along the direction orthogonal to the direction D.