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Q: Are there some parallelograms that are rectangles?

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yes. rectangles are just the special cases of parallelograms where the angles are all 900

All rectangles have 90 degree angles and with parallelograms that does not always have to be the case. But no matter what in order for a parallelogram to be a rectangle the angles have to all be 90 degrees.Rectangles are special cases of parallelograms. They have all the properties of parallelograms, and in addition, all their internal angles are right-angles - 90° angles.

Parallelograms Rhombuses Rectangles Squares

squares, rectangles, rhombuses, and parallelograms all have four sides

It is because parallelograms are in definition, is a quadrilateral with two pairs of parallel sides. So that means the angles don't have to be 90 degrees like the rectangle has to; as long as two pairs of sides are parallel and is a quadrilateral, it is a parallelogram.

Related questions

All normal rectangles, are parallelograms.

Yes, thet's true. Rectangles are special kinds of parallelograms. So all rectangles are parallelograms, but there are other parallelograms that are not rectangles.

No. Only some parallelograms are rectangles. But all rectangles are parallelograms.

Some parallelograms are rectangles; all rectangles are parallelograms.

In fact, some are rectangles, but not all are.

All of them are.

false

True

Some of them (rectangles) do.

yes, it is true

Yes.

Yes

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