Function: noun
Date: 1601
: an angle whose sides lie in opposite directions from the vertex in the same straight line and which equals two right angles
Function: noun
Date: 1601
: an angle whose sides lie in opposite directions from the vertex in the same straight line and which equals two right angles
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012