The Supplementary angles reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Supplementary angles

A pair of angles are supplementary if their respective measures sum to 180 degrees.

If the two angles are adjacent (i.e., have a common vertex and share a side, but do not have any interior points in common) their non-shared sides form a line.

See also

• complementary angles

This is the "Supplementary angles" reference article from the English Wikipedia. All text is available under the terms of the GNU Free Documentation License. See also our Disclaimer.