Euclid's Postulates

 

Euclid's postulates were

1. A straight line may be drawn from any one point to any other point. 
2. A terminated line or a line segment can be produced indefinitely. 
3. A circle can be drawn with any center and of any radius. 
4. All right angles are equal to one another.
5. If a straight line falling on two straight lines makes the exterior angles on the same side of it taken together less than two right angles, then the two straight lines if produced infinitely meet on that side on which the sum of angles are less than two right angles.

Pair of linear equation notes 

 Intorduction to euclid's Geometry