The picture below is of a football field. The two sidelines are parallel to each other. The 20 yard line is shown on the diagram below. If it is perpendicular to one sideline, which of the statements below must also be true?

Question

Because of the definition of the transitive property, the 20 yard line is perpendicular to the other sideline
Because of the Same-Side Interior angles theorem, the 20 line is parallel to the other side line
Because of the Perpendicular Transversal theorem, the 20 yard line is parallel to the other sideline
Because of the Perpendicular Transversal theorem, the 20 yard line is perpendicular to the other sideline

Answer 1

Because of the Perpendicular Transversal theorem, the 20 yard line is perpendicular to the other sideline.