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A parallelogram is only a rectangle if it has 4 right angles. A square is a rectangle, but not vice versa because a square has all equal side lengths, four sides, AND four right angles. A rectangle has four right angles and 4 sides.

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Q: When does a parallelogram become a rectangle?
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Related questions

How does a parallelogram relate to a rectangle?

A rectangle is a parallelogram but a parallelogram is not a rectangle. A rectangle needs all 90 degree angles but a parallelogram dosnt.


How is a parallelogram and a rectangle the same?

A rectangle is a parallelogram but a parallelogram need not be a rectangle and so they are not the same.


Is there a rectangle that is not a parallelogram?

Nope, A rectangle is a type of parallelogram...


Is a parrallelogram a rectangle?

Yes, a rectangle is a special case of a parallelogram, where each of the 4 angles = 90°


How is a parallelogram a rectangle?

A parallelogram is not a rectangle. However, a rectangle is a parallelogram because it has two pairs of opposite sides that are parallel


Is a parallelogram a rectangle also?

A rectangle is a parallelogram, but a parallelogram is not necessarily a rectangle. This is because a parallelogram can be so many other things, like a rhombus or a square.


Why do the parallelogram and the rectangle have the same area?

a parallelogram is a tilted rectangle


What is the difference between a rectangle and a parallelogram?

A parallelogram is slanted. A rectangle is not.


What does a rectangle that is not a parallelogram look like?

A rectangle will always be a parallelogram.


Which quadrilateral has one or more of parallel sides?

A trapezium, parallelogram, rhombus, rectangle, square.A trapezium, parallelogram, rhombus, rectangle, square.A trapezium, parallelogram, rhombus, rectangle, square.A trapezium, parallelogram, rhombus, rectangle, square.


Is a rectangle always going to be a parallelogram?

A rectangle is a special case of a parallelogram


How do you prove that a parallelogram is a rectangle?

a rectangle has four right angles and opposite sides are all the same length This means that a parallelogram is not always a rectangle, but a rectangle is always a parallelogram, by definition.