Other wise it wouldn't be a rectangle.
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A rectangle
Shapes are not parallel or perpendicular. Lines are.Every side of a rectangle is parallel to the side opposite it,and perpendicular to both of the sides next to it.
Examples are: square, rectangle, parallelogram and a rhombus
No, they are parallel.
A rectangle (including squares). A quadrilateral has four sides. Think of the top and bottom of rectangles - they run parallel, as do the sides.