What does 3 lines mean in maths

- What does 3 parallel lines mean in maths
- What does 3 vertical lines mean in maths
- What does 3 horizontal lines mean in maths
- What does 3 lines on top of each other mean in maths
- What is the equation of a line
- Մաթեմաթիկա 3
- Equation of a line with 2 points
- Equation of a line given two points
- Matematika 3 dasaran xndirner