No. The only conditions to quality as a parallelogram is that it is a quadrilateral, and that opposite sides are parallel.
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Squares and rectangles
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.
a rectange
All angles in both are perpendicular and both have two sets of parallel sides
An octagon can have both perpendicular and parallel lines, depending on its specific configuration. In a regular octagon, opposite sides are parallel, while the angles between adjacent sides can create perpendicular lines in certain contexts. However, in an irregular octagon, the arrangement of sides and angles can vary widely, leading to different relationships between lines.