They are what makes it a rectangle. The rectangle is a special kind of parallelogram. The perpendicular lines cause it to be called a rectangle.
There are four perpendicular lines in a rectangle
A rectangle's perpendicular lines are ALWAYS adjacent to eachother
perpendicular.
A rectangle has 4 perpendicular lines that meet at right angles.
A trapezium has no right angles therefore there are no perpendicular lines. If it had perpendicular lines, it would be a square or rectangle.
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A rectangle is formed by perpendicular lines that create four 90 degree angles.
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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.
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Only if it's a rectangle...