which statement best explains the relationship between lines cd and fg?\n○ they are perpendicular because…

which statement best explains the relationship between lines cd and fg?\n○ they are perpendicular because their slopes are equal.\n○ they are perpendicular because their slopes are negative reciprocals.\n○ they are not perpendicular because their slopes are equal.\n○ they are not perpendicular because their slopes are negative reciprocals.
Answer
Answer:
B. They are perpendicular because their slopes are negative reciprocals.