Dacey wants to find out if the quadrlateral shown is a rectangle
Dacey's plan:
• Find the slopes of all four sides.
See if there are two pairs of the same slopes
• See if there are two pairs of slopes that are negative reciprocals.
Will her plan work? Why or why not?
No, because rectangles do not have parallel sides
Yes, because all rectangles have at least one pair of
parallel sides
Yes because all rectangles have perpendicular and
parallel sides
No, because rectangles must have sides that are the
same length