Q: What is the distance criterion that makes a parallelogram a rectangle?

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It is a right angled parallelogram.

A quadrilateral and a rectangle are the same so.............

A rectangle is defined as "a parallelogram with one right angle" A parallelogram is defined as "a quadrilateral with opposite sides equal and parallel" This makes a rectangle a sort of second-generation quadrilateral!

All the angles being 90o. A rectangle, like a parallelogram, has two pairs of parallel sides and opposite angles equal; however a rectangle also requires that the angles are all 90o (right angles) unlike a general parallelogram.

All four of the angles of a rectangle (and of squares) are right angles.(Its name comes from this : rect-angle.)

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It is a right angled parallelogram.

A parallelogram with a right angle is a rectangle.

A quadrilateral and a rectangle are the same so.............

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.

A rectangle is a special form of parallelogram that has adjacent sides perpendicular to each other or all the inside angles are 90 degrees.

A rectangle is defined as "a parallelogram with one right angle" A parallelogram is defined as "a quadrilateral with opposite sides equal and parallel" This makes a rectangle a sort of second-generation quadrilateral!

The main difference between a rectangle and a parallelogram that makes rectangle a special case of the parallelogram is the fact that all the angles of a rectangle are equal to 90 degrees. This is not the case in a parallelogram because the adjacent angles are only supplementary to each other.

All the angles being 90o. A rectangle, like a parallelogram, has two pairs of parallel sides and opposite angles equal; however a rectangle also requires that the angles are all 90o (right angles) unlike a general parallelogram.

All four of the angles of a rectangle (and of squares) are right angles.(Its name comes from this : rect-angle.)

Because it has 4 interior right angles whereas a parallelogram has 2 obtuse angle and 2 acute angles.

Because it has 4 interior right angles whereas a parallelogram has 2 obtuse angle and 2 acute angles.

no parallelograms can have either obtuse or acute angles. however not a right angle s it makes it a rectangle