Axioms of geometry
Axioms of geometry 1 and 2
Axiom 1: There exists one and only one line connecting any two points.
Axiom 2: Every segment can be extended into a line.
Axiom 2: Every segment can be extended into a line.
Axiom of geometry 3
Axiom 3: All circles are determined by their centre and radius.
Axioms of geometry 4
Axiom 4: All straight angles are equal.