# Plotting Quadrilaterals: Part 3 Slope

#10. Sketched below is a parallelogram. Note that segment AB and segment CD each have a slope of 2/3. Find the slope of BC and DA. Explain your method.

#11. What is the relationship between the slopes of the opposite sides of the parallelogram?

#12. Sketched below is a square. Note that segments AB and CD have a slope of -1. a) What is the slope of BC and DA? Explain why in a full sentence. b) What is the relationship between line segments ? Explain why in a full sentence.

#13. Sketched below is a square. Note that segments AB and CD have a slope of -1. a) What is the relationship between line segments BC and CD? Explain why in a full sentence. b) What is the relationship between line segments ? Explain why in a full sentence.

#14. What is the relationship between the slopes of perpendicular lines?

#15. Points (3,0) and (5,1) are two vertices of a rectangle. Move points S and T to form a rectangle. a) List the coordinates for points S and T. b) Find the slope of all of the line segments.