Adjacent Supplementary Angles

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Adjacent Supplementary Angles

 

two angles that have a common side and whose other sides lie on the same line.

Figure 1

Angles 1 and 2 in Figure 1 are adjacent supplementary angles.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.