Question

Answer the following questions about Euclids first six definitions.

Definitions-

1. a point is that of which there is no part.
2. a line is a length without breadth
3. and the extremities of a line are points
4. a straight-line is whatever lies evenly with points upon itself.
5. and a surface is that which has length and breadth alone.
6. and the extremities of a surface are lines.

im confused. help?