### What shape have one pair of parallel sides?

The name of the four-sided shape that has only one pair of parallel sides is known as a trapezoid. The other two sides are not parallel to each other. There are many other shapes with more than four sides that have one pair of parallel sides but these typically don't have special names. So assuming the question is only referring to four-sided figures, the answer is a trapezoid.

### Is it true that a four sided shape is always a square why?

No, a four sided shape is not always a square. The mathematical name for a four sided shape is a QUADRILATERAL. The definition of a square is a four sided shape with four equal sides and angles, internal angles totalling 360 degrees and four lines of symmetry. If a shape has all of these properties, it is a square. Possibilities for a four sided shape are As said above, all are called quadrilaterals, but some…

### Is a rectangle a parallelogram?

Yes, all rectangles are parallelograms, but not all parallelograms are rectangles. A parallelogram is a four-sided shape in which the opposite sides are parallel. A rectangle (and a square) is a four-sided shape in which the opposite sides are parallel and all corners are 90 degrees. The corners of a parallelogram can be 90 degrees but can also be different angles. Therefore, rectangles and squares are subsets of a parallelogram.

### Is a parallelogram a rectangle?

All rectangles are parallelograms, but not all parallelograms are rectangles. A parallelogram is a four-sided shape in which the opposite sides are parallel. A rectangle (and a square) is a four-sided shape in which the opposite sides are parallel and all corners are 90 degrees. The corners of a parallelogram can be 90 degrees but can also be different angles. Therefore, rectangles and squares are subsets of a parallelogram.