In geometry what is a point?

Answer 1

A point in geometry shows you where the line segment ends/starts

Ex) A._____.B Or ._____>B

A point is where two lines cross. More than two can cross but that is of no consequence. The two lines might be the coordinate lines on a graph which define the point.
A point is a vertex

Answer 2

A point is represtented by a dot on a piece of paper and is usually named by a capital letter, according to the book.