Option (3) is correct. The slope of CD = 1/2.
What is rectangle?
"A Rectangle is a four sided-polygon, having all the internal angles equal to 90 degrees, opposite sides are parallel and adjacent sides are perpendicular.
For the given situation,
Consider the rectangle ABCD,
The slope of [tex]AB=\frac{1}{2}[/tex]
The slope of parallel sides are equal. Here AB and CD are parallel sides.
So, slope of [tex]AB=CD[/tex].
Hence we can conclude that the slope of CD = 1/2. So, option (3) is correct.
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