A parallelogram is a figure with different lengths and widths(also called breadth) where opposite sides and opposite angles are equal. But the angles are not 900 each. In fact, no angle in a parallelogram is a right angle as presence of 1 right angle proves all the angles to be right angles.
A parallelogram with 4 right angles is called as a ''rectangle''
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A parallelogram with 4 right angles is a rectangle. Either it has 2 long sides and 2 short sides, or the 4 sides are equal and the parallelogram is a square
Different pools have different proportions.
Widths and lengths are two entirely different things. They don't go into anything other than Length x Width = Area.
A square has four sides of equal length. A rectangle has lengths that are different from the widths.
The widths all average out the same ... 15 degrees of longitude per time zone. The shapes are drawn the way they are in order to avoid splitting cities and states into two different time zones.