Define parallel lines, their notation, and how they behave on a flat surface.
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Needs illustrations of the arrow notations used for parallel lines (Fig 5.9).
Matching arrow marks on lines mathematically guarantee that they are parallel.
Definition of parallel lines.
Have you ever noticed the keys on a piano, the slats on a park bench, or the shading in a pencil sketch? These are real-world examples of parallel lines. We use them constantly in art, architecture, and engineering to create structure and depth.
Highlight the importance of being on the same plane.
Identify which lines are parallel on a dot grid.
Looking at a grid of dots, line and line are drawn with a constant perpendicular distance between them. Which statement best describes them?