for every 10 yards on a football field there is a boldly marked line labeled with the amount of yards each of those lines is perpendicular to both sidelines what can be said about the relationship of the sidelines justify your answer
The relationship between the sidelines can be described as parallel.
Parallel lines are lines in a plane that never intersect, meaning they are always equidistant from each other. In the case of the sidelines on a football field, they are always equidistant from each other because they are consistently marking the same number of yards perpendicular to both sidelines.
Since each boldly marked line indicates the same amount of yards from each sideline, it implies that the distance between the sidelines remains constant throughout the length of the football field. Therefore, the sidelines are parallel lines.