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When all 4 corners are right angles.

A parallelogram has two pairs of parallel sides. A rectangle has two pairs of parallel sides; therefore a rectangle is a parallelogram.

A rectangle also has four 90° angles; a parallelogram does not necessarily have four 90° angles, therefore a parallelogram may, or may not, be a rectangle.

Q: When can a parallelogram be a rectangle?

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

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

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

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.

A parallelogram is slanted. A rectangle is not.

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

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

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

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

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

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.

a parallelogram is a tilted rectangle

A rectangle will always be a parallelogram.

A parallelogram is slanted. A rectangle is not.

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

A rectangle is a special case of a parallelogram

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.