Lines are fundamental elements in geometry and design, and they can be categorized based on their orientation, relation to each other, or application. Here are four types of lines:
1. **Straight Line**:
- **Definition**: A straight line is the shortest distance between two points and extends infinitely in both directions without curving.
- **Examples**: Horizontal, vertical, or diagonal lines.
2. **Curved Line**:
- **Definition**: A curved line bends continuously without sharp angles, changing direction gradually.
- **Examples**: Circles, arcs, or any line that isnβt straight.
3. **Parallel Lines**:
- **Definition**: Parallel lines are two or more lines that run in the same direction and never intersect, regardless of how far they are extended.
- **Examples**: The lines on a ruled notebook page or railroad tracks.
4. **Perpendicular Lines**:
- **Definition**: Perpendicular lines intersect at a 90-degree angle, forming right angles.
- **Examples**: The edges of a square or the intersection of a street and a crosswalk.