Parallel Lines

The video tutorial discusses the characteristics of parallel lines, emphasizing that they are coplanar and do not intersect. It explains that parallel lines have the same slope and will never touch, using train tracks as a metaphor. The tutorial also clarifies misconceptions about parallel lines, such as their relationship with 90-degree angles and opposite rays, and highlights the importance of understanding coplanar lines.

What is the significance of the slope in determining if lines are parallel?

Describe the relationship between parallel lines and 90-degree angles.