Chapter 1 - Foundations of Geometry

Front

set

Back

collection of objects,

set A = {1, 2, 4}

Front

Element

Back

Front

empty or null set

Back

a set containing no elements, denoted ∅ or { }

Front

subset

Back

Front

Proper Subset

Back

Front

equivalent sets

Back

Front

disjoint sets

Back

Front

universal set

Back

Front

union

Back

Front

intersection

Back