Supplemental

sup·ple·ment  (spl-mnt) n. 1. Something added to complete a thing, make up for a deficiency, or extend or strengthen the whole. 2. A section added to a book or document to give further information or to correct errors. 3. A separate section devoted to a special subject inserted into a periodical, such as a newspaper. 4. Mathematics The angle or arc that when added to a given angle or arc makes 180° or a semicircle. Also called supplementary angle. tr.v. (-mnt) sup·ple·ment·ed, sup·ple·ment·ing, sup·ple·ments To provide or form a supplement to. [Middle English, from Old French, from Latin supplmentum, from supplre, to complete; see supply.] supple·men·tari·ty (-târ-t) n. supple·menta·ry (-mnt-r, -tr), supple·mental (-mntl) adj. supple·men·tation (-mn-tshn) n.

supplement supplementary angles

Thesaurus

Adj.	1.	supplemental - functioning in a supporting capacity; "the main library and its auxiliary branches" auxiliary, subsidiary, supplementary secondary - being of second rank or importance or value; not direct or immediate; "the stone will be hauled to a secondary crusher"; "a secondary source"; "a secondary issue"; "secondary streams"
	2.	supplemental - added to complete or make up a deficiency; "produced supplementary volumes" supplementary additive - characterized or produced by addition; "an additive process"