A supplement, in the context of addition, refers to something that is added to enhance or complete a whole. This can apply to various fields, such as nutrition, where dietary supplements like vitamins and minerals are taken to improve health. In education, supplementary materials, such as workbooks or online resources, are provided to support learning. In mathematics, a supplement can refer to an angle that, when added to another angle, results in a total of 180 degrees. For example, if one angle measures 70 degrees, its supplement would measure 110 degrees, ensuring the two angles together form a straight line.