- Euclid's first axiom
A straight line can be drawn between any two points.
- Euclid's second axiom
Any terminated straight line can be projected indefinitely.
- Euclid's third axiom
A circle with any radius can be drawn around any point.
- Euclid's fourth axiom
All right angles are equal.
- Euclid's fifth axiom
Only one line can be drawn through a point parallel to another line.