Geometry - Point, Line, Line Segment, and Ray

A Point is an exact location in space represented by a small dot. It has no length, breadth, or thickness. In geometry, points are named using capital letters like $A$, $B$, or $C$. Visually, it is just a tiny dot on a plane.

A Line is a straight path of points that extends infinitely in both directions. It has no endpoints and no fixed length, meaning it cannot be measured. Visually, it is drawn with arrows at both ends, such as $\overleftrightarrow{XY}$, to show it continues forever.

A Line Segment is a part of a line that has two fixed endpoints. Because it has a starting and an ending point, it has a definite length that can be measured using a ruler. Visually, it is shown as a straight path between two points $A$ and $B$, written as $\overline{AB}$.

A Ray is a part of a line that starts at a fixed point (called the initial point) and extends infinitely in only one direction. Visually, it is represented with one endpoint and one arrow, written as $\overrightarrow{OP}$ where $O$ is the starting point.

Horizontal lines are straight lines that run from left to right, similar to the horizon or the sleeping position. Vertical lines are straight lines that run up and down, standing tall like a pillar.

Slanting or Oblique lines are lines that are neither horizontal nor vertical. They lean at an angle, like a ladder placed against a wall.

Parallel lines are lines that stay the same distance apart and never meet, no matter how far they are extended. Visually, they look like the tracks of a railway line. Intersecting lines are lines that cross each other at a single common point, appearing like the letter $X$.