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A parallelogram in geometry is a quadrilateral with two pairs of parallel lines. A square, rectangle, rhombus, are examples of different types of parallelogram.
yes
It is sometimes true that two parallelograms are similar. The could be congruent, or dissimilar in that one is not an enlargement of the other.
Yes. Parallelograms have two pairs of opposite sides that are parallel. Rectangles also have two pairs of opposite sides that are parallel, which makes them parallelograms.
Yeah they have 4 equal sides Only some parallelograms have 4 equal sides. Such a parallelogram is called a rhombus. In general, a parallelogram has two different pairs of opposed equal sides. Like a rectangle given a sideways push at opposite corners.