| − | [[Image:Rtriangle.svg|thumb|250px]]'''Adjacent sides''' are sides of a polygon which are next to one another and share an angle. In the image at the right, sides ''a'' and ''b'' are adjacent, as are ''b'' and ''c'' and ''c'' and ''a''. | + | [[Image:Rtriangle.svg|thumb|250px]]'''Adjacent sides''' are sides of a [[polygon]] which are next to one another and share an [[angle]]. In the image at the right, sides ''a'' and ''b'' are adjacent, as are ''b'' and ''c'' and ''c'' and ''a''. |