In geometry, there are several types of lines based on their properties and relationships with other lines. Here are the 7 common types of lines with examples:
### 1. **Straight Line**
- A straight line is the shortest distance between two points, extending infinitely in both directions.
- **Example**: The edge of a ruler or the lines of a road.
### 2. **Curved Line**
- A curved line is not straight; it bends and changes direction gradually.
- **Example**: The arc of a circle or the path of a roller coaster.
### 3. **Parallel Lines**
- Parallel lines are two or more lines that are always the same distance apart and never meet, no matter how far they are extended.
- **Example**: Railway tracks or the lines on a notebook page.
### 4. **Perpendicular Lines**
- Perpendicular lines intersect at a 90-degree angle (right angle).
- **Example**: The corner of a book or the intersection of the floor and the wall.
### 5. **Intersecting Lines**
- Intersecting lines are lines that cross each other at any angle (not necessarily 90 degrees).
- **Example**: The lines of a cross or the intersection of two streets.
### 6. **Transversal Line**
- A transversal is a line that crosses two or more other lines at different points.
- **Example**: A road crossing two parallel roads.
### 7. **Oblique Line**
- An oblique line is any line that is not parallel or perpendicular to another line; it is slanted or inclined.
- **Example**: The slope of a hill or the angle of a roof.
These types of lines help in understanding geometry, and each one has specific properties useful in various mathematical and real-world applications!