<span>In geometry, definitions are formed using known words or terms to describe a new word. There are three words in geometry that are not formally defined. These three undefined terms are point, line and plane.
Formal definitions are formed using other defined words. Line segment is a defined term because it is comprised of undefined terms (example: the undefined term "line").</span>
In geometry, definitions are formed using known words or terms to describe a new word. There are three words in geometry that are not formally defined. These three undefined terms are point, line and plane. Formal definitions are formed using other defined words. Line segment is a defined term because it is comprised of undefined terms (example: the undefined term "line").
